28518760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 67161600

約数和(自身を除く): 38642840

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 109, 124, 155, 211, 218, 248, 310, 422, 436, 545, 620, 844, 872, 1055, 1090, 1240, 1688, 2110, 2180, 3379, 4220, 4360, 6541, 6758, 8440, 13082, 13516, 16895, 22999, 26164, 27032, 32705, 33790, 45998, 52328, 65410, 67580, 91996, 114995, 130820, 135160, 183992, 229990, 261640, 459980, 712969, 919960, 1425938, 2851876, 3564845, 5703752, 7129690, 14259380, 28518760]

約数ペア:

[(1, 28518760), (2, 14259380), (4, 7129690), (5, 5703752), (8, 3564845), (10, 2851876), (20, 1425938), (31, 919960), (40, 712969), (62, 459980), (109, 261640), (124, 229990), (155, 183992), (211, 135160), (218, 130820), (248, 114995), (310, 91996), (422, 67580), (436, 65410), (545, 52328), (620, 45998), (844, 33790), (872, 32705), (1055, 27032), (1090, 26164), (1240, 22999), (1688, 16895), (2110, 13516), (2180, 13082), (3379, 8440), (4220, 6758), (4360, 6541)]