7980156

素因数分解:

$2^2\times 3^2\times {\mathrm{221671}}^1$

素因数の和:221681

約数の個数: 18

約数和(自身を含む): 20172152

約数和(自身を除く): 12191996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 221671, 443342, 665013, 886684, 1330026, 1995039, 2660052, 3990078, 7980156]

約数ペア:

[(1, 7980156), (2, 3990078), (3, 2660052), (4, 1995039), (6, 1330026), (9, 886684), (12, 665013), (18, 443342), (36, 221671)]