257714691

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{61}}^1\times {\mathrm{641}}^1$

素因数の和:744

約数の個数: 32

約数和(自身を含む): 378934080

約数和(自身を除く): 121219389

約数列:

[1, 3, 13, 39, 61, 169, 183, 507, 641, 793, 1923, 2197, 2379, 6591, 8333, 10309, 24999, 30927, 39101, 108329, 117303, 134017, 324987, 402051, 508313, 1408277, 1524939, 4224831, 6608069, 19824207, 85904897, 257714691]

約数ペア:

[(1, 257714691), (3, 85904897), (13, 19824207), (39, 6608069), (61, 4224831), (169, 1524939), (183, 1408277), (507, 508313), (641, 402051), (793, 324987), (1923, 134017), (2197, 117303), (2379, 108329), (6591, 39101), (8333, 30927), (10309, 24999)]