8940440

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{563}}^1$

素因数の和:971

約数の個数: 32

約数和(自身を含む): 20202480

約数和(自身を除く): 11262040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 563, 794, 1126, 1588, 1985, 2252, 2815, 3176, 3970, 4504, 5630, 7940, 11260, 15880, 22520, 223511, 447022, 894044, 1117555, 1788088, 2235110, 4470220, 8940440]

約数ペア:

[(1, 8940440), (2, 4470220), (4, 2235110), (5, 1788088), (8, 1117555), (10, 894044), (20, 447022), (40, 223511), (397, 22520), (563, 15880), (794, 11260), (1126, 7940), (1588, 5630), (1985, 4504), (2252, 3970), (2815, 3176)]