81212649

素因数分解:

$3^1\times 7^2\times {\mathrm{349}}^1\times {\mathrm{1583}}^1$

素因数の和:1949

約数の個数: 24

約数和(自身を含む): 126403200

約数和(自身を除く): 45190551

約数列:

[1, 3, 7, 21, 49, 147, 349, 1047, 1583, 2443, 4749, 7329, 11081, 17101, 33243, 51303, 77567, 232701, 552467, 1657401, 3867269, 11601807, 27070883, 81212649]

約数ペア:

[(1, 81212649), (3, 27070883), (7, 11601807), (21, 3867269), (49, 1657401), (147, 552467), (349, 232701), (1047, 77567), (1583, 51303), (2443, 33243), (4749, 17101), (7329, 11081)]