205122550

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{57781}}^1$

素因数の和:57864

約数の個数: 24

約数和(自身を含む): 386908272

約数和(自身を除く): 181785722

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 57781, 115562, 288905, 577810, 1444525, 2889050, 4102451, 8204902, 20512255, 41024510, 102561275, 205122550]

約数ペア:

[(1, 205122550), (2, 102561275), (5, 41024510), (10, 20512255), (25, 8204902), (50, 4102451), (71, 2889050), (142, 1444525), (355, 577810), (710, 288905), (1775, 115562), (3550, 57781)]