20890892

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{2539}}^1$

素因数の和:2582

約数の個数: 36

約数和(自身を含む): 42565320

約数和(自身を除く): 21674428

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 121, 187, 242, 374, 484, 748, 2057, 2539, 4114, 5078, 8228, 10156, 27929, 43163, 55858, 86326, 111716, 172652, 307219, 474793, 614438, 949586, 1228876, 1899172, 5222723, 10445446, 20890892]

約数ペア:

[(1, 20890892), (2, 10445446), (4, 5222723), (11, 1899172), (17, 1228876), (22, 949586), (34, 614438), (44, 474793), (68, 307219), (121, 172652), (187, 111716), (242, 86326), (374, 55858), (484, 43163), (748, 27929), (2057, 10156), (2539, 8228), (4114, 5078)]