19745971557

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3986669}}^1$

素因数の和:3986812

約数の個数: 16

約数和(自身を含む): 28576450560

約数和(自身を除く): 8830479003

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4953, 3986669, 11960007, 51826697, 155480091, 506306963, 1518920889, 6581990519, 19745971557]

約数ペア:

[(1, 19745971557), (3, 6581990519), (13, 1518920889), (39, 506306963), (127, 155480091), (381, 51826697), (1651, 11960007), (4953, 3986669)]