18416979

素因数分解:

$3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1213}}^1$

素因数の和:1467

約数の個数: 24

約数和(自身を含む): 30553952

約数和(自身を除く): 12136973

約数列:

[1, 3, 7, 9, 21, 63, 241, 723, 1213, 1687, 2169, 3639, 5061, 8491, 10917, 15183, 25473, 76419, 292333, 876999, 2046331, 2630997, 6138993, 18416979]

約数ペア:

[(1, 18416979), (3, 6138993), (7, 2630997), (9, 2046331), (21, 876999), (63, 292333), (241, 76419), (723, 25473), (1213, 15183), (1687, 10917), (2169, 8491), (3639, 5061)]