20478516

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 29054604

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 107, 123, 164, 214, 246, 321, 389, 428, 492, 642, 778, 1167, 1284, 1556, 2334, 4387, 4668, 8774, 13161, 15949, 17548, 26322, 31898, 41623, 47847, 52644, 63796, 83246, 95694, 124869, 166492, 191388, 249738, 499476, 1706543, 3413086, 5119629, 6826172, 10239258, 20478516]

約数ペア:

[(1, 20478516), (2, 10239258), (3, 6826172), (4, 5119629), (6, 3413086), (12, 1706543), (41, 499476), (82, 249738), (107, 191388), (123, 166492), (164, 124869), (214, 95694), (246, 83246), (321, 63796), (389, 52644), (428, 47847), (492, 41623), (642, 31898), (778, 26322), (1167, 17548), (1284, 15949), (1556, 13161), (2334, 8774), (4387, 4668)]