21516993

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 10606527

約数列:

[1, 3, 9, 53, 79, 159, 237, 477, 571, 711, 1713, 4187, 5139, 12561, 30263, 37683, 45109, 90789, 135327, 272367, 405981, 2390777, 7172331, 21516993]

約数ペア:

[(1, 21516993), (3, 7172331), (9, 2390777), (53, 405981), (79, 272367), (159, 135327), (237, 90789), (477, 45109), (571, 37683), (711, 30263), (1713, 12561), (4187, 5139)]