20575750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^2\times {\mathrm{487}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 41794272

約数和(自身を除く): 21218522

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 169, 250, 325, 338, 487, 650, 845, 974, 1625, 1690, 2435, 3250, 4225, 4870, 6331, 8450, 12175, 12662, 21125, 24350, 31655, 42250, 60875, 63310, 82303, 121750, 158275, 164606, 316550, 411515, 791375, 823030, 1582750, 2057575, 4115150, 10287875, 20575750]

約数ペア:

[(1, 20575750), (2, 10287875), (5, 4115150), (10, 2057575), (13, 1582750), (25, 823030), (26, 791375), (50, 411515), (65, 316550), (125, 164606), (130, 158275), (169, 121750), (250, 82303), (325, 63310), (338, 60875), (487, 42250), (650, 31655), (845, 24350), (974, 21125), (1625, 12662), (1690, 12175), (2435, 8450), (3250, 6331), (4225, 4870)]