81728840

素因数分解:

$2^3\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{2017}}^1$

素因数の和:3041

約数の個数: 32

約数和(自身を含む): 184162680

約数和(自身を除く): 102433840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1013, 2017, 2026, 4034, 4052, 5065, 8068, 8104, 10085, 10130, 16136, 20170, 20260, 40340, 40520, 80680, 2043221, 4086442, 8172884, 10216105, 16345768, 20432210, 40864420, 81728840]

約数ペア:

[(1, 81728840), (2, 40864420), (4, 20432210), (5, 16345768), (8, 10216105), (10, 8172884), (20, 4086442), (40, 2043221), (1013, 80680), (2017, 40520), (2026, 40340), (4034, 20260), (4052, 20170), (5065, 16136), (8068, 10130), (8104, 10085)]