40398440

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1013}}^1$

素因数の和:2021

約数の個数: 32

約数和(自身を含む): 91077480

約数和(自身を除く): 50679040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1013, 1994, 2026, 3988, 4052, 4985, 5065, 7976, 8104, 9970, 10130, 19940, 20260, 39880, 40520, 1009961, 2019922, 4039844, 5049805, 8079688, 10099610, 20199220, 40398440]

約数ペア:

[(1, 40398440), (2, 20199220), (4, 10099610), (5, 8079688), (8, 5049805), (10, 4039844), (20, 2019922), (40, 1009961), (997, 40520), (1013, 39880), (1994, 20260), (2026, 19940), (3988, 10130), (4052, 9970), (4985, 8104), (5065, 7976)]