280055120

素因数分解:

$2^4\times 5^1\times {\mathrm{3500689}}^1$

素因数の和:3500702

約数の個数: 20

約数和(自身を含む): 651128340

約数和(自身を除く): 371073220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3500689, 7001378, 14002756, 17503445, 28005512, 35006890, 56011024, 70013780, 140027560, 280055120]

約数ペア:

[(1, 280055120), (2, 140027560), (4, 70013780), (5, 56011024), (8, 35006890), (10, 28005512), (16, 17503445), (20, 14002756), (40, 7001378), (80, 3500689)]