21167881273

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{144917}}^1$

素因数の和:145213

約数の個数: 24

約数和(自身を含む): 26961704064

約数和(自身を除く): 5793822791

約数列:

[1, 7, 11, 49, 77, 271, 539, 1897, 2981, 13279, 20867, 144917, 146069, 1014419, 1594087, 7100933, 11158609, 39272507, 78110263, 274907549, 431997577, 1924352843, 3023983039, 21167881273]

約数ペア:

[(1, 21167881273), (7, 3023983039), (11, 1924352843), (49, 431997577), (77, 274907549), (271, 78110263), (539, 39272507), (1897, 11158609), (2981, 7100933), (13279, 1594087), (20867, 1014419), (144917, 146069)]