164000780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{431581}}^1$

素因数の和:431609

約数の個数: 24

約数和(自身を含む): 362528880

約数和(自身を除く): 198528100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 431581, 863162, 1726324, 2157905, 4315810, 8200039, 8631620, 16400078, 32800156, 41000195, 82000390, 164000780]

約数ペア:

[(1, 164000780), (2, 82000390), (4, 41000195), (5, 32800156), (10, 16400078), (19, 8631620), (20, 8200039), (38, 4315810), (76, 2157905), (95, 1726324), (190, 863162), (380, 431581)]