15957500

素因数分解:

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

素因数の和:528

約数の個数: 60

約数和(自身を含む): 37656696

約数和(自身を除く): 21699196

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 491, 500, 625, 650, 982, 1250, 1300, 1625, 1964, 2455, 2500, 3250, 4910, 6383, 6500, 8125, 9820, 12275, 12766, 16250, 24550, 25532, 31915, 32500, 49100, 61375, 63830, 122750, 127660, 159575, 245500, 306875, 319150, 613750, 638300, 797875, 1227500, 1595750, 3191500, 3989375, 7978750, 15957500]

約数ペア:

[(1, 15957500), (2, 7978750), (4, 3989375), (5, 3191500), (10, 1595750), (13, 1227500), (20, 797875), (25, 638300), (26, 613750), (50, 319150), (52, 306875), (65, 245500), (100, 159575), (125, 127660), (130, 122750), (250, 63830), (260, 61375), (325, 49100), (491, 32500), (500, 31915), (625, 25532), (650, 24550), (982, 16250), (1250, 12766), (1300, 12275), (1625, 9820), (1964, 8125), (2455, 6500), (2500, 6383), (3250, 4910)]