19952530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4951}}^1$

素因数の和:5002

約数の個数: 32

約数和(自身を含む): 39932928

約数和(自身を除く): 19980398

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4951, 9902, 24755, 49510, 64363, 128726, 153481, 306962, 321815, 643630, 767405, 1534810, 1995253, 3990506, 9976265, 19952530]

約数ペア:

[(1, 19952530), (2, 9976265), (5, 3990506), (10, 1995253), (13, 1534810), (26, 767405), (31, 643630), (62, 321815), (65, 306962), (130, 153481), (155, 128726), (310, 64363), (403, 49510), (806, 24755), (2015, 9902), (4030, 4951)]