18640895

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{773}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 28086912

約数和(自身を除く): 9446017

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 773, 1855, 3445, 3865, 4823, 5411, 10049, 24115, 27055, 40969, 50245, 70343, 204845, 286783, 351715, 532597, 1433915, 2662985, 3728179, 18640895]

約数ペア:

[(1, 18640895), (5, 3728179), (7, 2662985), (13, 1433915), (35, 532597), (53, 351715), (65, 286783), (91, 204845), (265, 70343), (371, 50245), (455, 40969), (689, 27055), (773, 24115), (1855, 10049), (3445, 5411), (3865, 4823)]