20545372

素因数分解:

$2^2\times {\mathrm{79}}^2\times {\mathrm{823}}^1$

素因数の和:985

約数の個数: 18

約数和(自身を含む): 36459528

約数和(自身を除く): 15914156

約数列:

[1, 2, 4, 79, 158, 316, 823, 1646, 3292, 6241, 12482, 24964, 65017, 130034, 260068, 5136343, 10272686, 20545372]

約数ペア:

[(1, 20545372), (2, 10272686), (4, 5136343), (79, 260068), (158, 130034), (316, 65017), (823, 24964), (1646, 12482), (3292, 6241)]