20400855

素因数分解:

$3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{9007}}^1$

素因数の和:9166

約数の個数: 16

約数和(自身を含む): 32861184

約数和(自身を除く): 12460329

約数列:

[1, 3, 5, 15, 151, 453, 755, 2265, 9007, 27021, 45035, 135105, 1360057, 4080171, 6800285, 20400855]

約数ペア:

[(1, 20400855), (3, 6800285), (5, 4080171), (15, 1360057), (151, 135105), (453, 45035), (755, 27021), (2265, 9007)]