31786520

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5717}}^1$

素因数の和:5867

約数の個数: 32

約数和(自身を含む): 72046800

約数和(自身を除く): 40260280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 5717, 11434, 22868, 28585, 45736, 57170, 114340, 228680, 794663, 1589326, 3178652, 3973315, 6357304, 7946630, 15893260, 31786520]

約数ペア:

[(1, 31786520), (2, 15893260), (4, 7946630), (5, 6357304), (8, 3973315), (10, 3178652), (20, 1589326), (40, 794663), (139, 228680), (278, 114340), (556, 57170), (695, 45736), (1112, 28585), (1390, 22868), (2780, 11434), (5560, 5717)]