20219121

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2833}}^1$

素因数の和:2913

約数の個数: 24

約数和(自身を含む): 31978856

約数和(自身を除く): 11759735

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 2833, 7137, 8499, 25497, 36829, 110487, 172813, 331461, 518439, 1555317, 2246569, 6739707, 20219121]

約数ペア:

[(1, 20219121), (3, 6739707), (9, 2246569), (13, 1555317), (39, 518439), (61, 331461), (117, 172813), (183, 110487), (549, 36829), (793, 25497), (2379, 8499), (2833, 7137)]