21680152

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208463}}^1$

素因数の和:208482

約数の個数: 16

約数和(自身を含む): 43777440

約数和(自身を除く): 22097288

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208463, 416926, 833852, 1667704, 2710019, 5420038, 10840076, 21680152]

約数ペア:

[(1, 21680152), (2, 10840076), (4, 5420038), (8, 2710019), (13, 1667704), (26, 833852), (52, 416926), (104, 208463)]