21006081

素因数分解:

$3^3\times {\mathrm{101}}^1\times {\mathrm{7703}}^1$

素因数の和:7813

約数の個数: 16

約数和(自身を含む): 31432320

約数和(自身を除く): 10426239

約数列:

[1, 3, 9, 27, 101, 303, 909, 2727, 7703, 23109, 69327, 207981, 778003, 2334009, 7002027, 21006081]

約数ペア:

[(1, 21006081), (3, 7002027), (9, 2334009), (27, 778003), (101, 207981), (303, 69327), (909, 23109), (2727, 7703)]