81380676

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{521671}}^1$

素因数の和:521691

約数の個数: 24

約数和(自身を含む): 204495424

約数和(自身を除く): 123114748

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 521671, 1043342, 1565013, 2086684, 3130026, 6260052, 6781723, 13563446, 20345169, 27126892, 40690338, 81380676]

約数ペア:

[(1, 81380676), (2, 40690338), (3, 27126892), (4, 20345169), (6, 13563446), (12, 6781723), (13, 6260052), (26, 3130026), (39, 2086684), (52, 1565013), (78, 1043342), (156, 521671)]