28787121

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2879}}^1$

素因数の和:2997

約数の個数: 24

約数和(自身を含む): 45826560

約数和(自身を除く): 17039439

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 2879, 3333, 8637, 9999, 25911, 31669, 95007, 285021, 290779, 872337, 2617011, 3198569, 9595707, 28787121]

約数ペア:

[(1, 28787121), (3, 9595707), (9, 3198569), (11, 2617011), (33, 872337), (99, 290779), (101, 285021), (303, 95007), (909, 31669), (1111, 25911), (2879, 9999), (3333, 8637)]