21035943

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{7019}}^1$

素因数の和:7068

約数の個数: 20

約数和(自身を含む): 32277960

約数和(自身を除く): 11242017

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 7019, 21057, 63171, 189513, 259703, 568539, 779109, 2337327, 7011981, 21035943]

約数ペア:

[(1, 21035943), (3, 7011981), (9, 2337327), (27, 779109), (37, 568539), (81, 259703), (111, 189513), (333, 63171), (999, 21057), (2997, 7019)]