21318447

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1\times {\mathrm{607}}^1$

素因数の和:1142

約数の個数: 16

約数和(自身を含む): 29767680

約数和(自身を除く): 8449233

約数列:

[1, 3, 23, 69, 509, 607, 1527, 1821, 11707, 13961, 35121, 41883, 308963, 926889, 7106149, 21318447]

約数ペア:

[(1, 21318447), (3, 7106149), (23, 926889), (69, 308963), (509, 41883), (607, 35121), (1527, 13961), (1821, 11707)]