21370785

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1949}}^1$

素因数の和:2017

約数の個数: 32

約数和(自身を含む): 37065600

約数和(自身を除く): 15694815

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1949, 2193, 3655, 5847, 9745, 10965, 29235, 33133, 83807, 99399, 165665, 251421, 419035, 496995, 1257105, 1424719, 4274157, 7123595, 21370785]

約数ペア:

[(1, 21370785), (3, 7123595), (5, 4274157), (15, 1424719), (17, 1257105), (43, 496995), (51, 419035), (85, 251421), (129, 165665), (215, 99399), (255, 83807), (645, 33133), (731, 29235), (1949, 10965), (2193, 9745), (3655, 5847)]