28687550

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{8081}}^1$

素因数の和:8164

約数の個数: 24

約数和(自身を含む): 54117072

約数和(自身を除く): 25429522

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 8081, 16162, 40405, 80810, 202025, 404050, 573751, 1147502, 2868755, 5737510, 14343775, 28687550]

約数ペア:

[(1, 28687550), (2, 14343775), (5, 5737510), (10, 2868755), (25, 1147502), (50, 573751), (71, 404050), (142, 202025), (355, 80810), (710, 40405), (1775, 16162), (3550, 8081)]