78876020

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{18691}}^1$

素因数の和:18911

約数の個数: 24

約数和(自身を含む): 166433568

約数和(自身を除く): 87557548

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 18691, 37382, 74764, 93455, 186910, 373820, 3943801, 7887602, 15775204, 19719005, 39438010, 78876020]

約数ペア:

[(1, 78876020), (2, 39438010), (4, 19719005), (5, 15775204), (10, 7887602), (20, 3943801), (211, 373820), (422, 186910), (844, 93455), (1055, 74764), (2110, 37382), (4220, 18691)]