28201975

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 36046800

約数和(自身を除く): 7844825

約数列:

[1, 5, 25, 67, 113, 149, 335, 565, 745, 1675, 2825, 3725, 7571, 9983, 16837, 37855, 49915, 84185, 189275, 249575, 420925, 1128079, 5640395, 28201975]

約数ペア:

[(1, 28201975), (5, 5640395), (25, 1128079), (67, 420925), (113, 249575), (149, 189275), (335, 84185), (565, 49915), (745, 37855), (1675, 16837), (2825, 9983), (3725, 7571)]