21575710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 22877090

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 59, 65, 97, 118, 130, 145, 194, 290, 295, 377, 485, 590, 754, 767, 970, 1261, 1534, 1711, 1885, 2522, 2813, 3422, 3770, 3835, 5626, 5723, 6305, 7670, 8555, 11446, 12610, 14065, 17110, 22243, 28130, 28615, 36569, 44486, 57230, 73138, 74399, 111215, 148798, 165967, 182845, 222430, 331934, 365690, 371995, 743990, 829835, 1659670, 2157571, 4315142, 10787855, 21575710]

約数ペア:

[(1, 21575710), (2, 10787855), (5, 4315142), (10, 2157571), (13, 1659670), (26, 829835), (29, 743990), (58, 371995), (59, 365690), (65, 331934), (97, 222430), (118, 182845), (130, 165967), (145, 148798), (194, 111215), (290, 74399), (295, 73138), (377, 57230), (485, 44486), (590, 36569), (754, 28615), (767, 28130), (970, 22243), (1261, 17110), (1534, 14065), (1711, 12610), (1885, 11446), (2522, 8555), (2813, 7670), (3422, 6305), (3770, 5723), (3835, 5626)]