255280400

素因数分解:

$2^4\times 5^2\times {\mathrm{638201}}^1$

素因数の和:638219

約数の個数: 30

約数和(自身を含む): 613312122

約数和(自身を除く): 358031722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 638201, 1276402, 2552804, 3191005, 5105608, 6382010, 10211216, 12764020, 15955025, 25528040, 31910050, 51056080, 63820100, 127640200, 255280400]

約数ペア:

[(1, 255280400), (2, 127640200), (4, 63820100), (5, 51056080), (8, 31910050), (10, 25528040), (16, 15955025), (20, 12764020), (25, 10211216), (40, 6382010), (50, 5105608), (80, 3191005), (100, 2552804), (200, 1276402), (400, 638201)]