255759920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7933}}^1$

素因数の和:7990

約数の個数: 80

約数和(自身を含む): 661124352

約数和(自身を除く): 405364432

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 7933, 8060, 15866, 16120, 31732, 32240, 39665, 63464, 79330, 103129, 126928, 158660, 206258, 245923, 317320, 412516, 491846, 515645, 634640, 825032, 983692, 1031290, 1229615, 1650064, 1967384, 2062580, 2459230, 3196999, 3934768, 4125160, 4918460, 6393998, 8250320, 9836920, 12787996, 15984995, 19673840, 25575992, 31969990, 51151984, 63939980, 127879960, 255759920]

約数ペア:

[(1, 255759920), (2, 127879960), (4, 63939980), (5, 51151984), (8, 31969990), (10, 25575992), (13, 19673840), (16, 15984995), (20, 12787996), (26, 9836920), (31, 8250320), (40, 6393998), (52, 4918460), (62, 4125160), (65, 3934768), (80, 3196999), (104, 2459230), (124, 2062580), (130, 1967384), (155, 1650064), (208, 1229615), (248, 1031290), (260, 983692), (310, 825032), (403, 634640), (496, 515645), (520, 491846), (620, 412516), (806, 317320), (1040, 245923), (1240, 206258), (1612, 158660), (2015, 126928), (2480, 103129), (3224, 79330), (4030, 63464), (6448, 39665), (7933, 32240), (8060, 31732), (15866, 16120)]