25639160

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3221}}^1$

素因数の和:3431

約数の個数: 32

約数和(自身を含む): 57996000

約数和(自身を除く): 32356840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3221, 3980, 6442, 7960, 12884, 16105, 25768, 32210, 64420, 128840, 640979, 1281958, 2563916, 3204895, 5127832, 6409790, 12819580, 25639160]

約数ペア:

[(1, 25639160), (2, 12819580), (4, 6409790), (5, 5127832), (8, 3204895), (10, 2563916), (20, 1281958), (40, 640979), (199, 128840), (398, 64420), (796, 32210), (995, 25768), (1592, 16105), (1990, 12884), (3221, 7960), (3980, 6442)]