31915000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:530

約数の個数: 80

約数和(自身を含む): 80692920

約数和(自身を除く): 48777920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 491, 500, 520, 625, 650, 982, 1000, 1250, 1300, 1625, 1964, 2455, 2500, 2600, 3250, 3928, 4910, 5000, 6383, 6500, 8125, 9820, 12275, 12766, 13000, 16250, 19640, 24550, 25532, 31915, 32500, 49100, 51064, 61375, 63830, 65000, 98200, 122750, 127660, 159575, 245500, 255320, 306875, 319150, 491000, 613750, 638300, 797875, 1227500, 1276600, 1595750, 2455000, 3191500, 3989375, 6383000, 7978750, 15957500, 31915000]

約数ペア:

[(1, 31915000), (2, 15957500), (4, 7978750), (5, 6383000), (8, 3989375), (10, 3191500), (13, 2455000), (20, 1595750), (25, 1276600), (26, 1227500), (40, 797875), (50, 638300), (52, 613750), (65, 491000), (100, 319150), (104, 306875), (125, 255320), (130, 245500), (200, 159575), (250, 127660), (260, 122750), (325, 98200), (491, 65000), (500, 63830), (520, 61375), (625, 51064), (650, 49100), (982, 32500), (1000, 31915), (1250, 25532), (1300, 24550), (1625, 19640), (1964, 16250), (2455, 13000), (2500, 12766), (2600, 12275), (3250, 9820), (3928, 8125), (4910, 6500), (5000, 6383)]