64080400

素因数分解:

$2^4\times 5^2\times {\mathrm{160201}}^1$

素因数の和:160219

約数の個数: 30

約数和(自身を含む): 153954122

約数和(自身を除く): 89873722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 160201, 320402, 640804, 801005, 1281608, 1602010, 2563216, 3204020, 4005025, 6408040, 8010050, 12816080, 16020100, 32040200, 64080400]

約数ペア:

[(1, 64080400), (2, 32040200), (4, 16020100), (5, 12816080), (8, 8010050), (10, 6408040), (16, 4005025), (20, 3204020), (25, 2563216), (40, 1602010), (50, 1281608), (80, 801005), (100, 640804), (200, 320402), (400, 160201)]