21420828

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:129

約数の個数: 192

約数和(自身を含む): 69619200

約数和(自身を除く): 48198372

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 19, 22, 26, 27, 33, 36, 38, 39, 44, 52, 54, 57, 66, 73, 76, 78, 99, 108, 114, 117, 132, 143, 146, 156, 171, 198, 209, 219, 228, 234, 247, 286, 292, 297, 342, 351, 396, 418, 429, 438, 468, 494, 513, 572, 594, 627, 657, 684, 702, 741, 803, 836, 858, 876, 949, 988, 1026, 1188, 1254, 1287, 1314, 1387, 1404, 1482, 1606, 1716, 1881, 1898, 1971, 2052, 2223, 2409, 2508, 2574, 2628, 2717, 2774, 2847, 2964, 3212, 3762, 3796, 3861, 3942, 4161, 4446, 4818, 5148, 5434, 5548, 5643, 5694, 6669, 7227, 7524, 7722, 7884, 8151, 8322, 8541, 8892, 9636, 10439, 10868, 11286, 11388, 12483, 13338, 14454, 15257, 15444, 16302, 16644, 17082, 18031, 20878, 21681, 22572, 24453, 24966, 25623, 26676, 28908, 30514, 31317, 32604, 34164, 36062, 37449, 41756, 43362, 45771, 48906, 49932, 51246, 54093, 61028, 62634, 72124, 73359, 74898, 86724, 91542, 93951, 97812, 102492, 108186, 125268, 137313, 146718, 149796, 162279, 183084, 187902, 198341, 216372, 274626, 281853, 293436, 324558, 375804, 396682, 411939, 486837, 549252, 563706, 595023, 649116, 793364, 823878, 973674, 1127412, 1190046, 1647756, 1785069, 1947348, 2380092, 3570138, 5355207, 7140276, 10710414, 21420828]

約数ペア:

[(1, 21420828), (2, 10710414), (3, 7140276), (4, 5355207), (6, 3570138), (9, 2380092), (11, 1947348), (12, 1785069), (13, 1647756), (18, 1190046), (19, 1127412), (22, 973674), (26, 823878), (27, 793364), (33, 649116), (36, 595023), (38, 563706), (39, 549252), (44, 486837), (52, 411939), (54, 396682), (57, 375804), (66, 324558), (73, 293436), (76, 281853), (78, 274626), (99, 216372), (108, 198341), (114, 187902), (117, 183084), (132, 162279), (143, 149796), (146, 146718), (156, 137313), (171, 125268), (198, 108186), (209, 102492), (219, 97812), (228, 93951), (234, 91542), (247, 86724), (286, 74898), (292, 73359), (297, 72124), (342, 62634), (351, 61028), (396, 54093), (418, 51246), (429, 49932), (438, 48906), (468, 45771), (494, 43362), (513, 41756), (572, 37449), (594, 36062), (627, 34164), (657, 32604), (684, 31317), (702, 30514), (741, 28908), (803, 26676), (836, 25623), (858, 24966), (876, 24453), (949, 22572), (988, 21681), (1026, 20878), (1188, 18031), (1254, 17082), (1287, 16644), (1314, 16302), (1387, 15444), (1404, 15257), (1482, 14454), (1606, 13338), (1716, 12483), (1881, 11388), (1898, 11286), (1971, 10868), (2052, 10439), (2223, 9636), (2409, 8892), (2508, 8541), (2574, 8322), (2628, 8151), (2717, 7884), (2774, 7722), (2847, 7524), (2964, 7227), (3212, 6669), (3762, 5694), (3796, 5643), (3861, 5548), (3942, 5434), (4161, 5148), (4446, 4818)]