720121240

素因数分解:

$2^3\times 5^1\times {\mathrm{1319}}^1\times {\mathrm{13649}}^1$

素因数の和:14979

約数の個数: 32

約数和(自身を含む): 1621620000

約数和(自身を除く): 901498760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1319, 2638, 5276, 6595, 10552, 13190, 13649, 26380, 27298, 52760, 54596, 68245, 109192, 136490, 272980, 545960, 18003031, 36006062, 72012124, 90015155, 144024248, 180030310, 360060620, 720121240]

約数ペア:

[(1, 720121240), (2, 360060620), (4, 180030310), (5, 144024248), (8, 90015155), (10, 72012124), (20, 36006062), (40, 18003031), (1319, 545960), (2638, 272980), (5276, 136490), (6595, 109192), (10552, 68245), (13190, 54596), (13649, 52760), (26380, 27298)]