217983507

素因数分解:

$3^1\times 7^2\times {\mathrm{541}}^1\times {\mathrm{2741}}^1$

素因数の和:3299

約数の個数: 24

約数和(自身を含む): 338845392

約数和(自身を除く): 120861885

約数列:

[1, 3, 7, 21, 49, 147, 541, 1623, 2741, 3787, 8223, 11361, 19187, 26509, 57561, 79527, 134309, 402927, 1482881, 4448643, 10380167, 31140501, 72661169, 217983507]

約数ペア:

[(1, 217983507), (3, 72661169), (7, 31140501), (21, 10380167), (49, 4448643), (147, 1482881), (541, 402927), (1623, 134309), (2741, 79527), (3787, 57561), (8223, 26509), (11361, 19187)]