20608540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{281}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 45954720

約数和(自身を除く): 25346180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 281, 380, 386, 562, 772, 965, 1124, 1405, 1930, 2810, 3667, 3860, 5339, 5620, 7334, 10678, 14668, 18335, 21356, 26695, 36670, 53390, 54233, 73340, 106780, 108466, 216932, 271165, 542330, 1030427, 1084660, 2060854, 4121708, 5152135, 10304270, 20608540]

約数ペア:

[(1, 20608540), (2, 10304270), (4, 5152135), (5, 4121708), (10, 2060854), (19, 1084660), (20, 1030427), (38, 542330), (76, 271165), (95, 216932), (190, 108466), (193, 106780), (281, 73340), (380, 54233), (386, 53390), (562, 36670), (772, 26695), (965, 21356), (1124, 18335), (1405, 14668), (1930, 10678), (2810, 7334), (3667, 5620), (3860, 5339)]