21975430

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{27817}}^1$

素因数の和:27903

約数の個数: 16

約数和(自身を含む): 40057920

約数和(自身を除く): 18082490

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 27817, 55634, 139085, 278170, 2197543, 4395086, 10987715, 21975430]

約数ペア:

[(1, 21975430), (2, 10987715), (5, 4395086), (10, 2197543), (79, 278170), (158, 139085), (395, 55634), (790, 27817)]