80915980

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{13009}}^1$

素因数の和:13329

約数の個数: 24

約数和(自身を含む): 170483040

約数和(自身を除く): 89567060

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 13009, 26018, 52036, 65045, 130090, 260180, 4045799, 8091598, 16183196, 20228995, 40457990, 80915980]

約数ペア:

[(1, 80915980), (2, 40457990), (4, 20228995), (5, 16183196), (10, 8091598), (20, 4045799), (311, 260180), (622, 130090), (1244, 65045), (1555, 52036), (3110, 26018), (6220, 13009)]