18990815

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{683}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 23442048

約数和(自身を除く): 4451233

約数列:

[1, 5, 67, 83, 335, 415, 683, 3415, 5561, 27805, 45761, 56689, 228805, 283445, 3798163, 18990815]

約数ペア:

[(1, 18990815), (5, 3798163), (67, 283445), (83, 228805), (335, 56689), (415, 45761), (683, 27805), (3415, 5561)]