19791261

素因数分解:

$3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{991}}^1$

素因数の和:1321

約数の個数: 24

約数和(自身を含む): 32807424

約数和(自身を除く): 13016163

約数列:

[1, 3, 7, 9, 21, 63, 317, 951, 991, 2219, 2853, 2973, 6657, 6937, 8919, 19971, 20811, 62433, 314147, 942441, 2199029, 2827323, 6597087, 19791261]

約数ペア:

[(1, 19791261), (3, 6597087), (7, 2827323), (9, 2199029), (21, 942441), (63, 314147), (317, 62433), (951, 20811), (991, 19971), (2219, 8919), (2853, 6937), (2973, 6657)]