20862490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2131}}^1$

素因数の和:2238

約数の個数: 32

約数和(自身を含む): 41446080

約数和(自身を除く): 20583590

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2131, 4262, 4895, 9790, 10655, 21310, 23441, 46882, 117205, 189659, 234410, 379318, 948295, 1896590, 2086249, 4172498, 10431245, 20862490]

約数ペア:

[(1, 20862490), (2, 10431245), (5, 4172498), (10, 2086249), (11, 1896590), (22, 948295), (55, 379318), (89, 234410), (110, 189659), (178, 117205), (445, 46882), (890, 23441), (979, 21310), (1958, 10655), (2131, 9790), (4262, 4895)]