20713640

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2861}}^1$

素因数の和:3053

約数の個数: 32

約数和(自身を含む): 46879560

約数和(自身を除く): 26165920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2861, 3620, 5722, 7240, 11444, 14305, 22888, 28610, 57220, 114440, 517841, 1035682, 2071364, 2589205, 4142728, 5178410, 10356820, 20713640]

約数ペア:

[(1, 20713640), (2, 10356820), (4, 5178410), (5, 4142728), (8, 2589205), (10, 2071364), (20, 1035682), (40, 517841), (181, 114440), (362, 57220), (724, 28610), (905, 22888), (1448, 14305), (1810, 11444), (2861, 7240), (3620, 5722)]