397390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{811}}^1$

素因数の和:832

約数の個数: 24

約数和(自身を含む): 833112

約数和(自身を除く): 435722

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 811, 1622, 4055, 5677, 8110, 11354, 28385, 39739, 56770, 79478, 198695, 397390]

約数ペア:

[(1, 397390), (2, 198695), (5, 79478), (7, 56770), (10, 39739), (14, 28385), (35, 11354), (49, 8110), (70, 5677), (98, 4055), (245, 1622), (490, 811)]