21618519

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{3671}}^1$

素因数の和:3838

約数の個数: 16

約数和(自身を含む): 31256064

約数和(自身を除く): 9637545

約数列:

[1, 3, 13, 39, 151, 453, 1963, 3671, 5889, 11013, 47723, 143169, 554321, 1662963, 7206173, 21618519]

約数ペア:

[(1, 21618519), (3, 7206173), (13, 1662963), (39, 554321), (151, 143169), (453, 47723), (1963, 11013), (3671, 5889)]