20045259

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 33730560

約数和(自身を除く): 13685301

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 169, 191, 207, 299, 351, 507, 573, 621, 897, 1521, 1719, 2483, 2691, 3887, 4393, 4563, 5157, 7449, 8073, 11661, 13179, 22347, 32279, 34983, 39537, 57109, 67041, 96837, 104949, 118611, 171327, 290511, 513981, 742417, 871533, 1541943, 2227251, 6681753, 20045259]

約数ペア:

[(1, 20045259), (3, 6681753), (9, 2227251), (13, 1541943), (23, 871533), (27, 742417), (39, 513981), (69, 290511), (117, 171327), (169, 118611), (191, 104949), (207, 96837), (299, 67041), (351, 57109), (507, 39537), (573, 34983), (621, 32279), (897, 22347), (1521, 13179), (1719, 11661), (2483, 8073), (2691, 7449), (3887, 5157), (4393, 4563)]