21569028

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{383}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 57351168

約数和(自身を除く): 35782140

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 361, 383, 494, 722, 741, 766, 988, 1083, 1149, 1444, 1482, 1532, 2166, 2298, 2964, 4332, 4596, 4693, 4979, 7277, 9386, 9958, 14079, 14554, 14937, 18772, 19916, 21831, 28158, 29108, 29874, 43662, 56316, 59748, 87324, 94601, 138263, 189202, 276526, 283803, 378404, 414789, 553052, 567606, 829578, 1135212, 1659156, 1797419, 3594838, 5392257, 7189676, 10784514, 21569028]

約数ペア:

[(1, 21569028), (2, 10784514), (3, 7189676), (4, 5392257), (6, 3594838), (12, 1797419), (13, 1659156), (19, 1135212), (26, 829578), (38, 567606), (39, 553052), (52, 414789), (57, 378404), (76, 283803), (78, 276526), (114, 189202), (156, 138263), (228, 94601), (247, 87324), (361, 59748), (383, 56316), (494, 43662), (722, 29874), (741, 29108), (766, 28158), (988, 21831), (1083, 19916), (1149, 18772), (1444, 14937), (1482, 14554), (1532, 14079), (2166, 9958), (2298, 9386), (2964, 7277), (4332, 4979), (4596, 4693)]