21467901

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 37103616

約数和(自身を除く): 15635715

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 169, 263, 273, 299, 483, 507, 789, 897, 1183, 1841, 2093, 3419, 3549, 3887, 5523, 6049, 6279, 10257, 11661, 18147, 23933, 27209, 42343, 44447, 71799, 78637, 81627, 127029, 133341, 235911, 311129, 550459, 933387, 1022281, 1651377, 3066843, 7155967, 21467901]

約数ペア:

[(1, 21467901), (3, 7155967), (7, 3066843), (13, 1651377), (21, 1022281), (23, 933387), (39, 550459), (69, 311129), (91, 235911), (161, 133341), (169, 127029), (263, 81627), (273, 78637), (299, 71799), (483, 44447), (507, 42343), (789, 27209), (897, 23933), (1183, 18147), (1841, 11661), (2093, 10257), (3419, 6279), (3549, 6049), (3887, 5523)]