18801251

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 23023440

約数和(自身を除く): 4222189

約数列:

[1, 7, 29, 49, 101, 131, 203, 707, 917, 1421, 2929, 3799, 4949, 6419, 13231, 20503, 26593, 92617, 143521, 186151, 383699, 648319, 2685893, 18801251]

約数ペア:

[(1, 18801251), (7, 2685893), (29, 648319), (49, 383699), (101, 186151), (131, 143521), (203, 92617), (707, 26593), (917, 20503), (1421, 13231), (2929, 6419), (3799, 4949)]