390908035

素因数分解:

$5^1\times 7^2\times {\mathrm{397}}^1\times {\mathrm{4019}}^1$

素因数の和:4435

約数の個数: 24

約数和(自身を含む): 547186320

約数和(自身を除く): 156278285

約数列:

[1, 5, 7, 35, 49, 245, 397, 1985, 2779, 4019, 13895, 19453, 20095, 28133, 97265, 140665, 196931, 984655, 1595543, 7977715, 11168801, 55844005, 78181607, 390908035]

約数ペア:

[(1, 390908035), (5, 78181607), (7, 55844005), (35, 11168801), (49, 7977715), (245, 1595543), (397, 984655), (1985, 196931), (2779, 140665), (4019, 97265), (13895, 28133), (19453, 20095)]