81203290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{165721}}^1$

素因数の和:165742

約数の個数: 24

約数和(自身を含む): 170030772

約数和(自身を除く): 88827482

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 165721, 331442, 828605, 1160047, 1657210, 2320094, 5800235, 8120329, 11600470, 16240658, 40601645, 81203290]

約数ペア:

[(1, 81203290), (2, 40601645), (5, 16240658), (7, 11600470), (10, 8120329), (14, 5800235), (35, 2320094), (49, 1657210), (70, 1160047), (98, 828605), (245, 331442), (490, 165721)]