21336885

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2591}}^1$

素因数の和:2666

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17232075

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2591, 2745, 7773, 8235, 12955, 23319, 38865, 69957, 116595, 158051, 349785, 474153, 790255, 1422459, 2370765, 4267377, 7112295, 21336885]

約数ペア:

[(1, 21336885), (3, 7112295), (5, 4267377), (9, 2370765), (15, 1422459), (27, 790255), (45, 474153), (61, 349785), (135, 158051), (183, 116595), (305, 69957), (549, 38865), (915, 23319), (1647, 12955), (2591, 8235), (2745, 7773)]