21434320

素因数分解:

$2^4\times 5^1\times {\mathrm{267929}}^1$

素因数の和:267942

約数の個数: 20

約数和(自身を含む): 49834980

約数和(自身を除く): 28400660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267929, 535858, 1071716, 1339645, 2143432, 2679290, 4286864, 5358580, 10717160, 21434320]

約数ペア:

[(1, 21434320), (2, 10717160), (4, 5358580), (5, 4286864), (8, 2679290), (10, 2143432), (16, 1339645), (20, 1071716), (40, 535858), (80, 267929)]