20553765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{80603}}^1$

素因数の和:80628

約数の個数: 16

約数和(自身を含む): 34820928

約数和(自身を除く): 14267163

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 80603, 241809, 403015, 1209045, 1370251, 4110753, 6851255, 20553765]

約数ペア:

[(1, 20553765), (3, 6851255), (5, 4110753), (15, 1370251), (17, 1209045), (51, 403015), (85, 241809), (255, 80603)]