20790250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6397}}^1$

素因数の和:6427

約数の個数: 32

約数和(自身を含む): 41919696

約数和(自身を除く): 21129446

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6397, 12794, 31985, 63970, 83161, 159925, 166322, 319850, 415805, 799625, 831610, 1599250, 2079025, 4158050, 10395125, 20790250]

約数ペア:

[(1, 20790250), (2, 10395125), (5, 4158050), (10, 2079025), (13, 1599250), (25, 831610), (26, 799625), (50, 415805), (65, 319850), (125, 166322), (130, 159925), (250, 83161), (325, 63970), (650, 31985), (1625, 12794), (3250, 6397)]