20812940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14657}}^1$

素因数の和:14737

約数の個数: 24

約数和(自身を含む): 44325792

約数和(自身を除く): 23512852

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14657, 29314, 58628, 73285, 146570, 293140, 1040647, 2081294, 4162588, 5203235, 10406470, 20812940]

約数ペア:

[(1, 20812940), (2, 10406470), (4, 5203235), (5, 4162588), (10, 2081294), (20, 1040647), (71, 293140), (142, 146570), (284, 73285), (355, 58628), (710, 29314), (1420, 14657)]