20928865

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6650015

約数列:

[1, 5, 29, 37, 47, 83, 145, 185, 235, 415, 1073, 1363, 1739, 2407, 3071, 3901, 5365, 6815, 8695, 12035, 15355, 19505, 50431, 89059, 113129, 144337, 252155, 445295, 565645, 721685, 4185773, 20928865]

約数ペア:

[(1, 20928865), (5, 4185773), (29, 721685), (37, 565645), (47, 445295), (83, 252155), (145, 144337), (185, 113129), (235, 89059), (415, 50431), (1073, 19505), (1363, 15355), (1739, 12035), (2407, 8695), (3071, 6815), (3901, 5365)]