19888700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15299}}^1$

素因数の和:15326

約数の個数: 36

約数和(自身を含む): 46481400

約数和(自身を除く): 26592700

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15299, 30598, 61196, 76495, 152990, 198887, 305980, 382475, 397774, 764950, 795548, 994435, 1529900, 1988870, 3977740, 4972175, 9944350, 19888700]

約数ペア:

[(1, 19888700), (2, 9944350), (4, 4972175), (5, 3977740), (10, 1988870), (13, 1529900), (20, 994435), (25, 795548), (26, 764950), (50, 397774), (52, 382475), (65, 305980), (100, 198887), (130, 152990), (260, 76495), (325, 61196), (650, 30598), (1300, 15299)]