19995320

素因数分解:

$2^3\times 5^1\times {\mathrm{499883}}^1$

素因数の和:499894

約数の個数: 16

約数和(自身を含む): 44989560

約数和(自身を除く): 24994240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499883, 999766, 1999532, 2499415, 3999064, 4998830, 9997660, 19995320]

約数ペア:

[(1, 19995320), (2, 9997660), (4, 4998830), (5, 3999064), (8, 2499415), (10, 1999532), (20, 999766), (40, 499883)]