15717020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{359}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 36288000

約数和(自身を除く): 20570980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 359, 398, 718, 796, 995, 1436, 1795, 1990, 2189, 3590, 3949, 3980, 4378, 7180, 7898, 8756, 10945, 15796, 19745, 21890, 39490, 43780, 71441, 78980, 142882, 285764, 357205, 714410, 785851, 1428820, 1571702, 3143404, 3929255, 7858510, 15717020]

約数ペア:

[(1, 15717020), (2, 7858510), (4, 3929255), (5, 3143404), (10, 1571702), (11, 1428820), (20, 785851), (22, 714410), (44, 357205), (55, 285764), (110, 142882), (199, 78980), (220, 71441), (359, 43780), (398, 39490), (718, 21890), (796, 19745), (995, 15796), (1436, 10945), (1795, 8756), (1990, 7898), (2189, 7180), (3590, 4378), (3949, 3980)]