28890057

素因数分解:

$3^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1319}}^1$

素因数の和:1485

約数の個数: 24

約数和(自身を含む): 45144000

約数和(自身を除く): 16253943

約数列:

[1, 3, 7, 21, 49, 147, 149, 447, 1043, 1319, 3129, 3957, 7301, 9233, 21903, 27699, 64631, 193893, 196531, 589593, 1375717, 4127151, 9630019, 28890057]

約数ペア:

[(1, 28890057), (3, 9630019), (7, 4127151), (21, 1375717), (49, 589593), (147, 196531), (149, 193893), (447, 64631), (1043, 27699), (1319, 21903), (3129, 9233), (3957, 7301)]