21192269

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 26013120

約数和(自身を除く): 4820851

約数列:

[1, 7, 23, 59, 97, 161, 413, 529, 679, 1357, 2231, 3703, 5723, 9499, 15617, 31211, 40061, 51313, 131629, 218477, 359191, 921403, 3027467, 21192269]

約数ペア:

[(1, 21192269), (7, 3027467), (23, 921403), (59, 359191), (97, 218477), (161, 131629), (413, 51313), (529, 40061), (679, 31211), (1357, 15617), (2231, 9499), (3703, 5723)]