487500

素因数分解:

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

素因数の和:45

約数の個数: 72

約数和(自身を含む): 1531152

約数和(自身を除く): 1043652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 125, 130, 150, 156, 195, 250, 260, 300, 325, 375, 390, 500, 625, 650, 750, 780, 975, 1250, 1300, 1500, 1625, 1875, 1950, 2500, 3125, 3250, 3750, 3900, 4875, 6250, 6500, 7500, 8125, 9375, 9750, 12500, 16250, 18750, 19500, 24375, 32500, 37500, 40625, 48750, 81250, 97500, 121875, 162500, 243750, 487500]

約数ペア:

[(1, 487500), (2, 243750), (3, 162500), (4, 121875), (5, 97500), (6, 81250), (10, 48750), (12, 40625), (13, 37500), (15, 32500), (20, 24375), (25, 19500), (26, 18750), (30, 16250), (39, 12500), (50, 9750), (52, 9375), (60, 8125), (65, 7500), (75, 6500), (78, 6250), (100, 4875), (125, 3900), (130, 3750), (150, 3250), (156, 3125), (195, 2500), (250, 1950), (260, 1875), (300, 1625), (325, 1500), (375, 1300), (390, 1250), (500, 975), (625, 780), (650, 750)]