79996880

素因数分解:

$2^4\times 5^1\times {\mathrm{999961}}^1$

素因数の和:999974

約数の個数: 20

約数和(自身を含む): 185992932

約数和(自身を除く): 105996052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 999961, 1999922, 3999844, 4999805, 7999688, 9999610, 15999376, 19999220, 39998440, 79996880]

約数ペア:

[(1, 79996880), (2, 39998440), (4, 19999220), (5, 15999376), (8, 9999610), (10, 7999688), (16, 4999805), (20, 3999844), (40, 1999922), (80, 999961)]