890315

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 16

約数和(自身を含む): 1130976

約数和(自身を除く): 240661

約数列:

[1, 5, 41, 43, 101, 205, 215, 505, 1763, 4141, 4343, 8815, 20705, 21715, 178063, 890315]

約数ペア:

[(1, 890315), (5, 178063), (41, 21715), (43, 20705), (101, 8815), (205, 4343), (215, 4141), (505, 1763)]