20896857

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{643}}^1$

素因数の和:829

約数の個数: 24

約数和(自身を含む): 31746624

約数和(自身を除く): 10849767

約数列:

[1, 3, 9, 23, 69, 157, 207, 471, 643, 1413, 1929, 3611, 5787, 10833, 14789, 32499, 44367, 100951, 133101, 302853, 908559, 2321873, 6965619, 20896857]

約数ペア:

[(1, 20896857), (3, 6965619), (9, 2321873), (23, 908559), (69, 302853), (157, 133101), (207, 100951), (471, 44367), (643, 32499), (1413, 14789), (1929, 10833), (3611, 5787)]