20871495

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27283}}^1$

素因数の和:27311

約数の個数: 24

約数和(自身を含む): 38306736

約数和(自身を除く): 17435241

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27283, 81849, 136415, 245547, 409245, 463811, 1227735, 1391433, 2319055, 4174299, 6957165, 20871495]

約数ペア:

[(1, 20871495), (3, 6957165), (5, 4174299), (9, 2319055), (15, 1391433), (17, 1227735), (45, 463811), (51, 409245), (85, 245547), (153, 136415), (255, 81849), (765, 27283)]