21405384

素因数分解:

$2^3\times 3^5\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1$

素因数の和:63

約数の個数: 288

約数和(自身を含む): 81332160

約数和(自身を除く): 59926776

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 18, 21, 22, 24, 26, 27, 28, 33, 36, 39, 42, 44, 52, 54, 56, 63, 66, 72, 77, 78, 81, 84, 88, 91, 99, 104, 108, 117, 121, 126, 132, 143, 154, 156, 162, 168, 182, 189, 198, 216, 231, 234, 242, 243, 252, 264, 273, 286, 297, 308, 312, 324, 351, 363, 364, 378, 396, 429, 462, 468, 484, 486, 504, 546, 567, 572, 594, 616, 648, 693, 702, 726, 728, 756, 792, 819, 847, 858, 891, 924, 936, 968, 972, 1001, 1053, 1089, 1092, 1134, 1144, 1188, 1287, 1386, 1404, 1452, 1512, 1573, 1638, 1694, 1701, 1716, 1782, 1848, 1944, 2002, 2079, 2106, 2178, 2184, 2268, 2376, 2457, 2541, 2574, 2673, 2772, 2808, 2904, 3003, 3146, 3159, 3267, 3276, 3388, 3402, 3432, 3564, 3861, 4004, 4158, 4212, 4356, 4536, 4719, 4914, 5082, 5148, 5346, 5544, 6006, 6237, 6292, 6318, 6534, 6552, 6776, 6804, 7128, 7371, 7623, 7722, 8008, 8316, 8424, 8712, 9009, 9438, 9801, 9828, 10164, 10296, 10692, 11011, 11583, 12012, 12474, 12584, 12636, 13068, 13608, 14157, 14742, 15246, 15444, 16632, 18018, 18711, 18876, 19602, 19656, 20328, 21384, 22022, 22113, 22869, 23166, 24024, 24948, 25272, 26136, 27027, 28314, 29403, 29484, 30492, 30888, 33033, 34749, 36036, 37422, 37752, 39204, 42471, 44044, 44226, 45738, 46332, 49896, 54054, 56628, 58806, 58968, 60984, 66066, 68607, 69498, 72072, 74844, 78408, 81081, 84942, 88088, 88452, 91476, 92664, 99099, 108108, 113256, 117612, 127413, 132132, 137214, 138996, 149688, 162162, 169884, 176904, 182952, 198198, 205821, 216216, 235224, 243243, 254826, 264264, 274428, 277992, 297297, 324324, 339768, 382239, 396396, 411642, 486486, 509652, 548856, 594594, 648648, 764478, 792792, 823284, 891891, 972972, 1019304, 1189188, 1528956, 1646568, 1783782, 1945944, 2378376, 2675673, 3057912, 3567564, 5351346, 7135128, 10702692, 21405384]

約数ペア:

[(1, 21405384), (2, 10702692), (3, 7135128), (4, 5351346), (6, 3567564), (7, 3057912), (8, 2675673), (9, 2378376), (11, 1945944), (12, 1783782), (13, 1646568), (14, 1528956), (18, 1189188), (21, 1019304), (22, 972972), (24, 891891), (26, 823284), (27, 792792), (28, 764478), (33, 648648), (36, 594594), (39, 548856), (42, 509652), (44, 486486), (52, 411642), (54, 396396), (56, 382239), (63, 339768), (66, 324324), (72, 297297), (77, 277992), (78, 274428), (81, 264264), (84, 254826), (88, 243243), (91, 235224), (99, 216216), (104, 205821), (108, 198198), (117, 182952), (121, 176904), (126, 169884), (132, 162162), (143, 149688), (154, 138996), (156, 137214), (162, 132132), (168, 127413), (182, 117612), (189, 113256), (198, 108108), (216, 99099), (231, 92664), (234, 91476), (242, 88452), (243, 88088), (252, 84942), (264, 81081), (273, 78408), (286, 74844), (297, 72072), (308, 69498), (312, 68607), (324, 66066), (351, 60984), (363, 58968), (364, 58806), (378, 56628), (396, 54054), (429, 49896), (462, 46332), (468, 45738), (484, 44226), (486, 44044), (504, 42471), (546, 39204), (567, 37752), (572, 37422), (594, 36036), (616, 34749), (648, 33033), (693, 30888), (702, 30492), (726, 29484), (728, 29403), (756, 28314), (792, 27027), (819, 26136), (847, 25272), (858, 24948), (891, 24024), (924, 23166), (936, 22869), (968, 22113), (972, 22022), (1001, 21384), (1053, 20328), (1089, 19656), (1092, 19602), (1134, 18876), (1144, 18711), (1188, 18018), (1287, 16632), (1386, 15444), (1404, 15246), (1452, 14742), (1512, 14157), (1573, 13608), (1638, 13068), (1694, 12636), (1701, 12584), (1716, 12474), (1782, 12012), (1848, 11583), (1944, 11011), (2002, 10692), (2079, 10296), (2106, 10164), (2178, 9828), (2184, 9801), (2268, 9438), (2376, 9009), (2457, 8712), (2541, 8424), (2574, 8316), (2673, 8008), (2772, 7722), (2808, 7623), (2904, 7371), (3003, 7128), (3146, 6804), (3159, 6776), (3267, 6552), (3276, 6534), (3388, 6318), (3402, 6292), (3432, 6237), (3564, 6006), (3861, 5544), (4004, 5346), (4158, 5148), (4212, 5082), (4356, 4914), (4536, 4719)]