18102500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{557}}^1$

素因数の和:594

約数の個数: 60

約数和(自身を含む): 42708204

約数和(自身を除く): 24605704

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 557, 625, 650, 1114, 1250, 1300, 1625, 2228, 2500, 2785, 3250, 5570, 6500, 7241, 8125, 11140, 13925, 14482, 16250, 27850, 28964, 32500, 36205, 55700, 69625, 72410, 139250, 144820, 181025, 278500, 348125, 362050, 696250, 724100, 905125, 1392500, 1810250, 3620500, 4525625, 9051250, 18102500]

約数ペア:

[(1, 18102500), (2, 9051250), (4, 4525625), (5, 3620500), (10, 1810250), (13, 1392500), (20, 905125), (25, 724100), (26, 696250), (50, 362050), (52, 348125), (65, 278500), (100, 181025), (125, 144820), (130, 139250), (250, 72410), (260, 69625), (325, 55700), (500, 36205), (557, 32500), (625, 28964), (650, 27850), (1114, 16250), (1250, 14482), (1300, 13925), (1625, 11140), (2228, 8125), (2500, 7241), (2785, 6500), (3250, 5570)]