20411265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{557}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 17086335

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 349, 557, 1047, 1671, 1745, 2443, 2785, 3899, 5235, 7329, 8355, 11697, 12215, 19495, 36645, 58485, 194393, 583179, 971965, 1360751, 2915895, 4082253, 6803755, 20411265]

約数ペア:

[(1, 20411265), (3, 6803755), (5, 4082253), (7, 2915895), (15, 1360751), (21, 971965), (35, 583179), (105, 194393), (349, 58485), (557, 36645), (1047, 19495), (1671, 12215), (1745, 11697), (2443, 8355), (2785, 7329), (3899, 5235)]