20932821

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 37914240

約数和(自身を除く): 16981419

約数列:

[1, 3, 7, 9, 13, 21, 39, 61, 63, 91, 117, 183, 273, 419, 427, 549, 793, 819, 1257, 1281, 2379, 2933, 3771, 3843, 5447, 5551, 7137, 8799, 16341, 16653, 25559, 26397, 38129, 49023, 49959, 76677, 114387, 178913, 230031, 332267, 343161, 536739, 996801, 1610217, 2325869, 2990403, 6977607, 20932821]

約数ペア:

[(1, 20932821), (3, 6977607), (7, 2990403), (9, 2325869), (13, 1610217), (21, 996801), (39, 536739), (61, 343161), (63, 332267), (91, 230031), (117, 178913), (183, 114387), (273, 76677), (419, 49959), (427, 49023), (549, 38129), (793, 26397), (819, 25559), (1257, 16653), (1281, 16341), (2379, 8799), (2933, 7137), (3771, 5551), (3843, 5447)]