25667020

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{6449}}^1$

素因数の和:6657

約数の個数: 24

約数和(自身を含む): 54180000

約数和(自身を除く): 28512980

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 6449, 12898, 25796, 32245, 64490, 128980, 1283351, 2566702, 5133404, 6416755, 12833510, 25667020]

約数ペア:

[(1, 25667020), (2, 12833510), (4, 6416755), (5, 5133404), (10, 2566702), (20, 1283351), (199, 128980), (398, 64490), (796, 32245), (995, 25796), (1990, 12898), (3980, 6449)]