218998971

素因数分解:

$3^4\times {\mathrm{1571}}^1\times {\mathrm{1721}}^1$

素因数の和:3304

約数の個数: 20

約数和(自身を含む): 327545064

約数和(自身を除く): 108546093

約数列:

[1, 3, 9, 27, 81, 1571, 1721, 4713, 5163, 14139, 15489, 42417, 46467, 127251, 139401, 2703691, 8111073, 24333219, 72999657, 218998971]

約数ペア:

[(1, 218998971), (3, 72999657), (9, 24333219), (27, 8111073), (81, 2703691), (1571, 139401), (1721, 127251), (4713, 46467), (5163, 42417), (14139, 15489)]