21271619

素因数分解:

${\mathrm{23}}^2\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:634

約数の個数: 12

約数和(自身を含む): 22562400

約数和(自身を除く): 1290781

約数列:

[1, 23, 79, 509, 529, 1817, 11707, 40211, 41791, 269261, 924853, 21271619]

約数ペア:

[(1, 21271619), (23, 924853), (79, 269261), (509, 41791), (529, 40211), (1817, 11707)]