21512991

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 29224800

約数和(自身を除く): 7711809

約数列:

[1, 3, 89, 197, 267, 409, 591, 1227, 17533, 36401, 52599, 80573, 109203, 241719, 7170997, 21512991]

約数ペア:

[(1, 21512991), (3, 7170997), (89, 241719), (197, 109203), (267, 80573), (409, 52599), (591, 36401), (1227, 17533)]