21438053

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2647}}^1$

素因数の和:2756

約数の個数: 16

約数和(自身を含む): 26691840

約数和(自身を除く): 5253787

約数列:

[1, 7, 13, 89, 91, 623, 1157, 2647, 8099, 18529, 34411, 235583, 240877, 1649081, 3062579, 21438053]

約数ペア:

[(1, 21438053), (7, 3062579), (13, 1649081), (89, 240877), (91, 235583), (623, 34411), (1157, 18529), (2647, 8099)]