21821115

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1031}}^1$

素因数の和:1139

約数の個数: 32

約数和(自身を含む): 37449216

約数和(自身を除く): 15628101

約数列:

[1, 3, 5, 15, 17, 51, 83, 85, 249, 255, 415, 1031, 1245, 1411, 3093, 4233, 5155, 7055, 15465, 17527, 21165, 52581, 85573, 87635, 256719, 262905, 427865, 1283595, 1454741, 4364223, 7273705, 21821115]

約数ペア:

[(1, 21821115), (3, 7273705), (5, 4364223), (15, 1454741), (17, 1283595), (51, 427865), (83, 262905), (85, 256719), (249, 87635), (255, 85573), (415, 52581), (1031, 21165), (1245, 17527), (1411, 15465), (3093, 7055), (4233, 5155)]