21977930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{577}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 42822864

約数和(自身を除く): 20844934

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 293, 577, 586, 1154, 1465, 2885, 2930, 3809, 5770, 7501, 7618, 15002, 19045, 37505, 38090, 75010, 169061, 338122, 845305, 1690610, 2197793, 4395586, 10988965, 21977930]

約数ペア:

[(1, 21977930), (2, 10988965), (5, 4395586), (10, 2197793), (13, 1690610), (26, 845305), (65, 338122), (130, 169061), (293, 75010), (577, 38090), (586, 37505), (1154, 19045), (1465, 15002), (2885, 7618), (2930, 7501), (3809, 5770)]