20512991541

素因数分解:

$3^1\times 7^1\times {\mathrm{1951}}^1\times {\mathrm{500671}}^1$

素因数の和:502632

約数の個数: 16

約数和(自身を含む): 31273975808

約数和(自身を除く): 10760984267

約数列:

[1, 3, 7, 21, 1951, 5853, 13657, 40971, 500671, 1502013, 3504697, 10514091, 976809121, 2930427363, 6837663847, 20512991541]

約数ペア:

[(1, 20512991541), (3, 6837663847), (7, 2930427363), (21, 976809121), (1951, 10514091), (5853, 3504697), (13657, 1502013), (40971, 500671)]