289771780

素因数分解:

$2^2\times 5^1\times {\mathrm{1669}}^1\times {\mathrm{8681}}^1$

素因数の和:10359

約数の個数: 24

約数和(自身を含む): 608955480

約数和(自身を除く): 319183700

約数列:

[1, 2, 4, 5, 10, 20, 1669, 3338, 6676, 8345, 8681, 16690, 17362, 33380, 34724, 43405, 86810, 173620, 14488589, 28977178, 57954356, 72442945, 144885890, 289771780]

約数ペア:

[(1, 289771780), (2, 144885890), (4, 72442945), (5, 57954356), (10, 28977178), (20, 14488589), (1669, 173620), (3338, 86810), (6676, 43405), (8345, 34724), (8681, 33380), (16690, 17362)]