4142840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 10402560

約数和(自身を除く): 6259720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 257, 260, 310, 403, 514, 520, 620, 806, 1028, 1240, 1285, 1612, 2015, 2056, 2570, 3224, 3341, 4030, 5140, 6682, 7967, 8060, 10280, 13364, 15934, 16120, 16705, 26728, 31868, 33410, 39835, 63736, 66820, 79670, 103571, 133640, 159340, 207142, 318680, 414284, 517855, 828568, 1035710, 2071420, 4142840]

約数ペア:

[(1, 4142840), (2, 2071420), (4, 1035710), (5, 828568), (8, 517855), (10, 414284), (13, 318680), (20, 207142), (26, 159340), (31, 133640), (40, 103571), (52, 79670), (62, 66820), (65, 63736), (104, 39835), (124, 33410), (130, 31868), (155, 26728), (248, 16705), (257, 16120), (260, 15934), (310, 13364), (403, 10280), (514, 8060), (520, 7967), (620, 6682), (806, 5140), (1028, 4030), (1240, 3341), (1285, 3224), (1612, 2570), (2015, 2056)]