21985410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{10039}}^1$

素因数の和:10122

約数の個数: 32

約数和(自身を含む): 53493120

約数和(自身を除く): 31507710

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 73, 146, 219, 365, 438, 730, 1095, 2190, 10039, 20078, 30117, 50195, 60234, 100390, 150585, 301170, 732847, 1465694, 2198541, 3664235, 4397082, 7328470, 10992705, 21985410]

約数ペア:

[(1, 21985410), (2, 10992705), (3, 7328470), (5, 4397082), (6, 3664235), (10, 2198541), (15, 1465694), (30, 732847), (73, 301170), (146, 150585), (219, 100390), (365, 60234), (438, 50195), (730, 30117), (1095, 20078), (2190, 10039)]