21657835

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{4007}}^1$

素因数の和:4082

約数の個数: 16

約数和(自身を含む): 27703296

約数和(自身を除く): 6045461

約数列:

[1, 5, 23, 47, 115, 235, 1081, 4007, 5405, 20035, 92161, 188329, 460805, 941645, 4331567, 21657835]

約数ペア:

[(1, 21657835), (5, 4331567), (23, 941645), (47, 460805), (115, 188329), (235, 92161), (1081, 20035), (4007, 5405)]