20835750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{2137}}^1$

素因数の和:2170

約数の個数: 64

約数和(自身を含む): 56032704

約数和(自身を除く): 35196954

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 125, 130, 150, 195, 250, 325, 375, 390, 650, 750, 975, 1625, 1950, 2137, 3250, 4274, 4875, 6411, 9750, 10685, 12822, 21370, 27781, 32055, 53425, 55562, 64110, 83343, 106850, 138905, 160275, 166686, 267125, 277810, 320550, 416715, 534250, 694525, 801375, 833430, 1389050, 1602750, 2083575, 3472625, 4167150, 6945250, 10417875, 20835750]

約数ペア:

[(1, 20835750), (2, 10417875), (3, 6945250), (5, 4167150), (6, 3472625), (10, 2083575), (13, 1602750), (15, 1389050), (25, 833430), (26, 801375), (30, 694525), (39, 534250), (50, 416715), (65, 320550), (75, 277810), (78, 267125), (125, 166686), (130, 160275), (150, 138905), (195, 106850), (250, 83343), (325, 64110), (375, 55562), (390, 53425), (650, 32055), (750, 27781), (975, 21370), (1625, 12822), (1950, 10685), (2137, 9750), (3250, 6411), (4274, 4875)]