20542665

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 39497472

約数和(自身を除く): 18954807

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 61, 65, 143, 157, 165, 183, 195, 305, 429, 471, 671, 715, 785, 793, 915, 1727, 2013, 2041, 2145, 2355, 2379, 3355, 3965, 5181, 6123, 8635, 8723, 9577, 10065, 10205, 11895, 22451, 25905, 26169, 28731, 30615, 43615, 47885, 67353, 105347, 112255, 124501, 130845, 143655, 316041, 336765, 373503, 526735, 622505, 1369511, 1580205, 1867515, 4108533, 6847555, 20542665]

約数ペア:

[(1, 20542665), (3, 6847555), (5, 4108533), (11, 1867515), (13, 1580205), (15, 1369511), (33, 622505), (39, 526735), (55, 373503), (61, 336765), (65, 316041), (143, 143655), (157, 130845), (165, 124501), (183, 112255), (195, 105347), (305, 67353), (429, 47885), (471, 43615), (671, 30615), (715, 28731), (785, 26169), (793, 25905), (915, 22451), (1727, 11895), (2013, 10205), (2041, 10065), (2145, 9577), (2355, 8723), (2379, 8635), (3355, 6123), (3965, 5181)]