18780156

素因数分解:

$2^2\times 3^2\times {\mathrm{521671}}^1$

素因数の和:521681

約数の個数: 18

約数和(自身を含む): 47472152

約数和(自身を除く): 28691996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 521671, 1043342, 1565013, 2086684, 3130026, 4695039, 6260052, 9390078, 18780156]

約数ペア:

[(1, 18780156), (2, 9390078), (3, 6260052), (4, 4695039), (6, 3130026), (9, 2086684), (12, 1565013), (18, 1043342), (36, 521671)]