217874090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{444641}}^1$

素因数の和:444662

約数の個数: 24

約数和(自身を含む): 456202692

約数和(自身を除く): 238328602

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 444641, 889282, 2223205, 3112487, 4446410, 6224974, 15562435, 21787409, 31124870, 43574818, 108937045, 217874090]

約数ペア:

[(1, 217874090), (2, 108937045), (5, 43574818), (7, 31124870), (10, 21787409), (14, 15562435), (35, 6224974), (49, 4446410), (70, 3112487), (98, 2223205), (245, 889282), (490, 444641)]