78441640

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{23627}}^1$

素因数の和:23721

約数の個数: 32

約数和(自身を含む): 178627680

約数和(自身を除く): 100186040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 23627, 47254, 94508, 118135, 189016, 236270, 472540, 945080, 1961041, 3922082, 7844164, 9805205, 15688328, 19610410, 39220820, 78441640]

約数ペア:

[(1, 78441640), (2, 39220820), (4, 19610410), (5, 15688328), (8, 9805205), (10, 7844164), (20, 3922082), (40, 1961041), (83, 945080), (166, 472540), (332, 236270), (415, 189016), (664, 118135), (830, 94508), (1660, 47254), (3320, 23627)]