81394925

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 103639200

約数和(自身を除く): 22244275

約数列:

[1, 5, 25, 59, 139, 295, 397, 695, 1475, 1985, 3475, 8201, 9925, 23423, 41005, 55183, 117115, 205025, 275915, 585575, 1379575, 3255797, 16278985, 81394925]

約数ペア:

[(1, 81394925), (5, 16278985), (25, 3255797), (59, 1379575), (139, 585575), (295, 275915), (397, 205025), (695, 117115), (1475, 55183), (1985, 41005), (3475, 23423), (8201, 9925)]