57128920

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7177}}^1$

素因数の和:7387

約数の個数: 32

約数和(自身を含む): 129204000

約数和(自身を除く): 72075080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7177, 7960, 14354, 28708, 35885, 57416, 71770, 143540, 287080, 1428223, 2856446, 5712892, 7141115, 11425784, 14282230, 28564460, 57128920]

約数ペア:

[(1, 57128920), (2, 28564460), (4, 14282230), (5, 11425784), (8, 7141115), (10, 5712892), (20, 2856446), (40, 1428223), (199, 287080), (398, 143540), (796, 71770), (995, 57416), (1592, 35885), (1990, 28708), (3980, 14354), (7177, 7960)]