21381885

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9697}}^1$

素因数の和:9722

約数の個数: 36

約数和(自身を含む): 43117308

約数和(自身を除く): 21735423

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9697, 29091, 48485, 67879, 87273, 145455, 203637, 339395, 436365, 475153, 610911, 1018185, 1425459, 2375765, 3054555, 4276377, 7127295, 21381885]

約数ペア:

[(1, 21381885), (3, 7127295), (5, 4276377), (7, 3054555), (9, 2375765), (15, 1425459), (21, 1018185), (35, 610911), (45, 475153), (49, 436365), (63, 339395), (105, 203637), (147, 145455), (245, 87273), (315, 67879), (441, 48485), (735, 29091), (2205, 9697)]