19156360

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5381}}^1$

素因数の和:5481

約数の個数: 32

約数和(自身を含む): 43594200

約数和(自身を除く): 24437840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5381, 10762, 21524, 26905, 43048, 53810, 107620, 215240, 478909, 957818, 1915636, 2394545, 3831272, 4789090, 9578180, 19156360]

約数ペア:

[(1, 19156360), (2, 9578180), (4, 4789090), (5, 3831272), (8, 2394545), (10, 1915636), (20, 957818), (40, 478909), (89, 215240), (178, 107620), (356, 53810), (445, 43048), (712, 26905), (890, 21524), (1780, 10762), (3560, 5381)]