21214265

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1249}}^1$

素因数の和:1376

約数の個数: 16

約数和(自身を含む): 26400000

約数和(自身を除く): 5185735

約数列:

[1, 5, 43, 79, 215, 395, 1249, 3397, 6245, 16985, 53707, 98671, 268535, 493355, 4242853, 21214265]

約数ペア:

[(1, 21214265), (5, 4242853), (43, 493355), (79, 268535), (215, 98671), (395, 53707), (1249, 16985), (3397, 6245)]