21480228

素因数分解:

$2^2\times 3^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:85

約数の個数: 216

約数和(自身を含む): 73198944

約数和(自身を除く): 51718716

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 27, 28, 33, 36, 41, 42, 44, 49, 54, 63, 66, 77, 81, 82, 84, 98, 99, 108, 123, 126, 132, 147, 154, 162, 164, 189, 196, 198, 231, 243, 246, 252, 287, 294, 297, 308, 324, 369, 378, 396, 441, 451, 462, 486, 492, 539, 567, 574, 588, 594, 693, 738, 756, 861, 882, 891, 902, 924, 972, 1078, 1107, 1134, 1148, 1188, 1323, 1353, 1386, 1476, 1617, 1701, 1722, 1764, 1782, 1804, 2009, 2079, 2156, 2214, 2268, 2583, 2646, 2673, 2706, 2772, 3157, 3234, 3321, 3402, 3444, 3564, 3969, 4018, 4059, 4158, 4428, 4851, 5166, 5292, 5346, 5412, 6027, 6237, 6314, 6468, 6642, 6804, 7749, 7938, 8036, 8118, 8316, 9471, 9702, 9963, 10332, 10692, 11907, 12054, 12177, 12474, 12628, 13284, 14553, 15498, 15876, 16236, 18081, 18711, 18942, 19404, 19926, 22099, 23247, 23814, 24108, 24354, 24948, 28413, 29106, 30996, 36162, 36531, 37422, 37884, 39852, 43659, 44198, 46494, 47628, 48708, 54243, 56826, 58212, 66297, 69741, 72324, 73062, 74844, 85239, 87318, 88396, 92988, 108486, 109593, 113652, 130977, 132594, 139482, 146124, 162729, 170478, 174636, 198891, 216972, 219186, 255717, 261954, 265188, 278964, 325458, 340956, 397782, 438372, 488187, 511434, 523908, 596673, 650916, 767151, 795564, 976374, 1022868, 1193346, 1534302, 1790019, 1952748, 2386692, 3068604, 3580038, 5370057, 7160076, 10740114, 21480228]

約数ペア:

[(1, 21480228), (2, 10740114), (3, 7160076), (4, 5370057), (6, 3580038), (7, 3068604), (9, 2386692), (11, 1952748), (12, 1790019), (14, 1534302), (18, 1193346), (21, 1022868), (22, 976374), (27, 795564), (28, 767151), (33, 650916), (36, 596673), (41, 523908), (42, 511434), (44, 488187), (49, 438372), (54, 397782), (63, 340956), (66, 325458), (77, 278964), (81, 265188), (82, 261954), (84, 255717), (98, 219186), (99, 216972), (108, 198891), (123, 174636), (126, 170478), (132, 162729), (147, 146124), (154, 139482), (162, 132594), (164, 130977), (189, 113652), (196, 109593), (198, 108486), (231, 92988), (243, 88396), (246, 87318), (252, 85239), (287, 74844), (294, 73062), (297, 72324), (308, 69741), (324, 66297), (369, 58212), (378, 56826), (396, 54243), (441, 48708), (451, 47628), (462, 46494), (486, 44198), (492, 43659), (539, 39852), (567, 37884), (574, 37422), (588, 36531), (594, 36162), (693, 30996), (738, 29106), (756, 28413), (861, 24948), (882, 24354), (891, 24108), (902, 23814), (924, 23247), (972, 22099), (1078, 19926), (1107, 19404), (1134, 18942), (1148, 18711), (1188, 18081), (1323, 16236), (1353, 15876), (1386, 15498), (1476, 14553), (1617, 13284), (1701, 12628), (1722, 12474), (1764, 12177), (1782, 12054), (1804, 11907), (2009, 10692), (2079, 10332), (2156, 9963), (2214, 9702), (2268, 9471), (2583, 8316), (2646, 8118), (2673, 8036), (2706, 7938), (2772, 7749), (3157, 6804), (3234, 6642), (3321, 6468), (3402, 6314), (3444, 6237), (3564, 6027), (3969, 5412), (4018, 5346), (4059, 5292), (4158, 5166), (4428, 4851)]