20478175

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 5770145

約数列:

[1, 5, 25, 71, 83, 139, 355, 415, 695, 1775, 2075, 3475, 5893, 9869, 11537, 29465, 49345, 57685, 147325, 246725, 288425, 819127, 4095635, 20478175]

約数ペア:

[(1, 20478175), (5, 4095635), (25, 819127), (71, 288425), (83, 246725), (139, 147325), (355, 57685), (415, 49345), (695, 29465), (1775, 11537), (2075, 9869), (3475, 5893)]