280080400

素因数分解:

$2^4\times 5^2\times {\mathrm{700201}}^1$

素因数の和:700219

約数の個数: 30

約数和(自身を含む): 672894122

約数和(自身を除く): 392813722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 700201, 1400402, 2800804, 3501005, 5601608, 7002010, 11203216, 14004020, 17505025, 28008040, 35010050, 56016080, 70020100, 140040200, 280080400]

約数ペア:

[(1, 280080400), (2, 140040200), (4, 70020100), (5, 56016080), (8, 35010050), (10, 28008040), (16, 17505025), (20, 14004020), (25, 11203216), (40, 7002010), (50, 5601608), (80, 3501005), (100, 2800804), (200, 1400402), (400, 700201)]