221913559

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1\times {\mathrm{641}}^1$

素因数の和:823

約数の個数: 24

約数和(自身を含む): 270040608

約数和(自身を除く): 48127049

約数列:

[1, 7, 19, 133, 137, 361, 641, 959, 2527, 2603, 4487, 12179, 18221, 49457, 85253, 87817, 231401, 346199, 614719, 1619807, 1668523, 11679661, 31701937, 221913559]

約数ペア:

[(1, 221913559), (7, 31701937), (19, 11679661), (133, 1668523), (137, 1619807), (361, 614719), (641, 346199), (959, 231401), (2527, 87817), (2603, 85253), (4487, 49457), (12179, 18221)]