20442747

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:751

約数の個数: 24

約数和(自身を含む): 30044208

約数和(自身を除く): 9601461

約数列:

[1, 3, 13, 39, 61, 169, 183, 507, 661, 793, 1983, 2379, 8593, 10309, 25779, 30927, 40321, 111709, 120963, 335127, 524173, 1572519, 6814249, 20442747]

約数ペア:

[(1, 20442747), (3, 6814249), (13, 1572519), (39, 524173), (61, 335127), (169, 120963), (183, 111709), (507, 40321), (661, 30927), (793, 25779), (1983, 10309), (2379, 8593)]