20810980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{677}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 46131120

約数和(自身を除く): 25320140

約数列:

[1, 2, 4, 5, 10, 20, 29, 53, 58, 106, 116, 145, 212, 265, 290, 530, 580, 677, 1060, 1354, 1537, 2708, 3074, 3385, 6148, 6770, 7685, 13540, 15370, 19633, 30740, 35881, 39266, 71762, 78532, 98165, 143524, 179405, 196330, 358810, 392660, 717620, 1040549, 2081098, 4162196, 5202745, 10405490, 20810980]

約数ペア:

[(1, 20810980), (2, 10405490), (4, 5202745), (5, 4162196), (10, 2081098), (20, 1040549), (29, 717620), (53, 392660), (58, 358810), (106, 196330), (116, 179405), (145, 143524), (212, 98165), (265, 78532), (290, 71762), (530, 39266), (580, 35881), (677, 30740), (1060, 19633), (1354, 15370), (1537, 13540), (2708, 7685), (3074, 6770), (3385, 6148)]