221569876

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{457789}}^1$

素因数の和:457815

約数の個数: 18

約数和(自身を含む): 426202490

約数和(自身を除く): 204632614

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 457789, 915578, 1831156, 5035679, 10071358, 20142716, 55392469, 110784938, 221569876]

約数ペア:

[(1, 221569876), (2, 110784938), (4, 55392469), (11, 20142716), (22, 10071358), (44, 5035679), (121, 1831156), (242, 915578), (484, 457789)]