20841040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2153}}^1$

素因数の和:2188

約数の個数: 60

約数和(自身を含む): 53285652

約数和(自身を除く): 32444612

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2153, 2420, 4306, 4840, 8612, 9680, 10765, 17224, 21530, 23683, 34448, 43060, 47366, 86120, 94732, 118415, 172240, 189464, 236830, 260513, 378928, 473660, 521026, 947320, 1042052, 1302565, 1894640, 2084104, 2605130, 4168208, 5210260, 10420520, 20841040]

約数ペア:

[(1, 20841040), (2, 10420520), (4, 5210260), (5, 4168208), (8, 2605130), (10, 2084104), (11, 1894640), (16, 1302565), (20, 1042052), (22, 947320), (40, 521026), (44, 473660), (55, 378928), (80, 260513), (88, 236830), (110, 189464), (121, 172240), (176, 118415), (220, 94732), (242, 86120), (440, 47366), (484, 43060), (605, 34448), (880, 23683), (968, 21530), (1210, 17224), (1936, 10765), (2153, 9680), (2420, 8612), (4306, 4840)]