31720280

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{5051}}^1$

素因数の和:5219

約数の個数: 32

約数和(自身を含む): 71839440

約数和(自身を除く): 40119160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 5051, 6280, 10102, 20204, 25255, 40408, 50510, 101020, 202040, 793007, 1586014, 3172028, 3965035, 6344056, 7930070, 15860140, 31720280]

約数ペア:

[(1, 31720280), (2, 15860140), (4, 7930070), (5, 6344056), (8, 3965035), (10, 3172028), (20, 1586014), (40, 793007), (157, 202040), (314, 101020), (628, 50510), (785, 40408), (1256, 25255), (1570, 20204), (3140, 10102), (5051, 6280)]