20208500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3109}}^1$

素因数の和:3141

約数の個数: 48

約数和(自身を含む): 47545680

約数和(自身を除く): 27337180

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3109, 3250, 6218, 6500, 12436, 15545, 31090, 40417, 62180, 77725, 80834, 155450, 161668, 202085, 310900, 388625, 404170, 777250, 808340, 1010425, 1554500, 2020850, 4041700, 5052125, 10104250, 20208500]

約数ペア:

[(1, 20208500), (2, 10104250), (4, 5052125), (5, 4041700), (10, 2020850), (13, 1554500), (20, 1010425), (25, 808340), (26, 777250), (50, 404170), (52, 388625), (65, 310900), (100, 202085), (125, 161668), (130, 155450), (250, 80834), (260, 77725), (325, 62180), (500, 40417), (650, 31090), (1300, 15545), (1625, 12436), (3109, 6500), (3250, 6218)]