21055276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{569}}^1$

素因数の和:642

約数の個数: 36

約数和(自身を含む): 41703480

約数和(自身を除く): 20648204

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 116, 319, 569, 638, 841, 1138, 1276, 1682, 2276, 3364, 6259, 9251, 12518, 16501, 18502, 25036, 33002, 37004, 66004, 181511, 363022, 478529, 726044, 957058, 1914116, 5263819, 10527638, 21055276]

約数ペア:

[(1, 21055276), (2, 10527638), (4, 5263819), (11, 1914116), (22, 957058), (29, 726044), (44, 478529), (58, 363022), (116, 181511), (319, 66004), (569, 37004), (638, 33002), (841, 25036), (1138, 18502), (1276, 16501), (1682, 12518), (2276, 9251), (3364, 6259)]