21401360

素因数分解:

$2^4\times 5^1\times {\mathrm{267517}}^1$

素因数の和:267530

約数の個数: 20

約数和(自身を含む): 49758348

約数和(自身を除く): 28356988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267517, 535034, 1070068, 1337585, 2140136, 2675170, 4280272, 5350340, 10700680, 21401360]

約数ペア:

[(1, 21401360), (2, 10700680), (4, 5350340), (5, 4280272), (8, 2675170), (10, 2140136), (16, 1337585), (20, 1070068), (40, 535034), (80, 267517)]