7978750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:526

約数の個数: 40

約数和(自身を含む): 16138584

約数和(自身を除く): 8159834

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 491, 625, 650, 982, 1250, 1625, 2455, 3250, 4910, 6383, 8125, 12275, 12766, 16250, 24550, 31915, 61375, 63830, 122750, 159575, 306875, 319150, 613750, 797875, 1595750, 3989375, 7978750]

約数ペア:

[(1, 7978750), (2, 3989375), (5, 1595750), (10, 797875), (13, 613750), (25, 319150), (26, 306875), (50, 159575), (65, 122750), (125, 63830), (130, 61375), (250, 31915), (325, 24550), (491, 16250), (625, 12766), (650, 12275), (982, 8125), (1250, 6383), (1625, 4910), (2455, 3250)]