18473913

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{2887}}^1$

素因数の和:2978

約数の個数: 20

約数和(自身を含む): 27955840

約数和(自身を除く): 9481927

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 2887, 6399, 8661, 25983, 77949, 228073, 233847, 684219, 2052657, 6157971, 18473913]

約数ペア:

[(1, 18473913), (3, 6157971), (9, 2052657), (27, 684219), (79, 233847), (81, 228073), (237, 77949), (711, 25983), (2133, 8661), (2887, 6399)]