161801560

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{29101}}^1$

素因数の和:29251

約数の個数: 32

約数和(自身を含む): 366685200

約数和(自身を除く): 204883640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 29101, 58202, 116404, 145505, 232808, 291010, 582020, 1164040, 4045039, 8090078, 16180156, 20225195, 32360312, 40450390, 80900780, 161801560]

約数ペア:

[(1, 161801560), (2, 80900780), (4, 40450390), (5, 32360312), (8, 20225195), (10, 16180156), (20, 8090078), (40, 4045039), (139, 1164040), (278, 582020), (556, 291010), (695, 232808), (1112, 145505), (1390, 116404), (2780, 58202), (5560, 29101)]