20359820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78307}}^1$

素因数の和:78329

約数の個数: 24

約数和(自身を含む): 46045104

約数和(自身を除く): 25685284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78307, 156614, 313228, 391535, 783070, 1017991, 1566140, 2035982, 4071964, 5089955, 10179910, 20359820]

約数ペア:

[(1, 20359820), (2, 10179910), (4, 5089955), (5, 4071964), (10, 2035982), (13, 1566140), (20, 1017991), (26, 783070), (52, 391535), (65, 313228), (130, 156614), (260, 78307)]