257816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:123

約数の個数: 32

約数和(自身を含む): 542640

約数和(自身を除く): 284824

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 67, 74, 104, 134, 148, 268, 296, 481, 536, 871, 962, 1742, 1924, 2479, 3484, 3848, 4958, 6968, 9916, 19832, 32227, 64454, 128908, 257816]

約数ペア:

[(1, 257816), (2, 128908), (4, 64454), (8, 32227), (13, 19832), (26, 9916), (37, 6968), (52, 4958), (67, 3848), (74, 3484), (104, 2479), (134, 1924), (148, 1742), (268, 962), (296, 871), (481, 536)]