20960390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2141}}^1$

素因数の和:2248

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 20680090

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2141, 4282, 4895, 9790, 10705, 21410, 23551, 47102, 117755, 190549, 235510, 381098, 952745, 1905490, 2096039, 4192078, 10480195, 20960390]

約数ペア:

[(1, 20960390), (2, 10480195), (5, 4192078), (10, 2096039), (11, 1905490), (22, 952745), (55, 381098), (89, 235510), (110, 190549), (178, 117755), (445, 47102), (890, 23551), (979, 21410), (1958, 10705), (2141, 9790), (4282, 4895)]