3987903025

素因数分解:

$5^2\times {\mathrm{3989}}^1\times {\mathrm{39989}}^1$

素因数の和:43988

約数の個数: 12

約数和(自身を含む): 4946363100

約数和(自身を除く): 958460075

約数列:

[1, 5, 25, 3989, 19945, 39989, 99725, 199945, 999725, 159516121, 797580605, 3987903025]

約数ペア:

[(1, 3987903025), (5, 797580605), (25, 159516121), (3989, 999725), (19945, 199945), (39989, 99725)]