21462813

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{9137}}^1$

素因数の和:9178

約数の個数: 20

約数和(自身を含む): 33170940

約数和(自身を除く): 11708127

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 9137, 27411, 82233, 246699, 264973, 740097, 794919, 2384757, 7154271, 21462813]

約数ペア:

[(1, 21462813), (3, 7154271), (9, 2384757), (27, 794919), (29, 740097), (81, 264973), (87, 246699), (261, 82233), (783, 27411), (2349, 9137)]