31680400

素因数分解:

$2^4\times 5^2\times {\mathrm{79201}}^1$

素因数の和:79219

約数の個数: 30

約数和(自身を含む): 76113122

約数和(自身を除く): 44432722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 79201, 158402, 316804, 396005, 633608, 792010, 1267216, 1584020, 1980025, 3168040, 3960050, 6336080, 7920100, 15840200, 31680400]

約数ペア:

[(1, 31680400), (2, 15840200), (4, 7920100), (5, 6336080), (8, 3960050), (10, 3168040), (16, 1980025), (20, 1584020), (25, 1267216), (40, 792010), (50, 633608), (80, 396005), (100, 316804), (200, 158402), (400, 79201)]