31894640

素因数分解:

$2^4\times 5^1\times {\mathrm{398683}}^1$

素因数の和:398696

約数の個数: 20

約数和(自身を含む): 74155224

約数和(自身を除く): 42260584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 398683, 797366, 1594732, 1993415, 3189464, 3986830, 6378928, 7973660, 15947320, 31894640]

約数ペア:

[(1, 31894640), (2, 15947320), (4, 7973660), (5, 6378928), (8, 3986830), (10, 3189464), (16, 1993415), (20, 1594732), (40, 797366), (80, 398683)]