8612500

素因数分解:

$2^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:95

約数の個数: 72

約数和(自身を含む): 20670552

約数和(自身を除く): 12058052

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 53, 65, 100, 106, 125, 130, 212, 250, 260, 265, 325, 500, 530, 625, 650, 689, 1060, 1250, 1300, 1325, 1378, 1625, 2500, 2650, 2756, 3125, 3250, 3445, 5300, 6250, 6500, 6625, 6890, 8125, 12500, 13250, 13780, 16250, 17225, 26500, 32500, 33125, 34450, 40625, 66250, 68900, 81250, 86125, 132500, 162500, 165625, 172250, 331250, 344500, 430625, 662500, 861250, 1722500, 2153125, 4306250, 8612500]

約数ペア:

[(1, 8612500), (2, 4306250), (4, 2153125), (5, 1722500), (10, 861250), (13, 662500), (20, 430625), (25, 344500), (26, 331250), (50, 172250), (52, 165625), (53, 162500), (65, 132500), (100, 86125), (106, 81250), (125, 68900), (130, 66250), (212, 40625), (250, 34450), (260, 33125), (265, 32500), (325, 26500), (500, 17225), (530, 16250), (625, 13780), (650, 13250), (689, 12500), (1060, 8125), (1250, 6890), (1300, 6625), (1325, 6500), (1378, 6250), (1625, 5300), (2500, 3445), (2650, 3250), (2756, 3125)]