21515481

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{599}}^1$

素因数の和:925

約数の個数: 24

約数和(自身を含む): 33633600

約数和(自身を除く): 12118119

約数列:

[1, 3, 9, 13, 39, 117, 307, 599, 921, 1797, 2763, 3991, 5391, 7787, 11973, 23361, 35919, 70083, 183893, 551679, 1655037, 2390609, 7171827, 21515481]

約数ペア:

[(1, 21515481), (3, 7171827), (9, 2390609), (13, 1655037), (39, 551679), (117, 183893), (307, 70083), (599, 35919), (921, 23361), (1797, 11973), (2763, 7787), (3991, 5391)]