80670040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1319}}^1$

素因数の和:1480

約数の個数: 64

約数和(自身を含む): 199584000

約数和(自身を除く): 118913960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 139, 220, 278, 440, 556, 695, 1112, 1319, 1390, 1529, 2638, 2780, 3058, 5276, 5560, 6116, 6595, 7645, 10552, 12232, 13190, 14509, 15290, 26380, 29018, 30580, 52760, 58036, 61160, 72545, 116072, 145090, 183341, 290180, 366682, 580360, 733364, 916705, 1466728, 1833410, 2016751, 3666820, 4033502, 7333640, 8067004, 10083755, 16134008, 20167510, 40335020, 80670040]

約数ペア:

[(1, 80670040), (2, 40335020), (4, 20167510), (5, 16134008), (8, 10083755), (10, 8067004), (11, 7333640), (20, 4033502), (22, 3666820), (40, 2016751), (44, 1833410), (55, 1466728), (88, 916705), (110, 733364), (139, 580360), (220, 366682), (278, 290180), (440, 183341), (556, 145090), (695, 116072), (1112, 72545), (1319, 61160), (1390, 58036), (1529, 52760), (2638, 30580), (2780, 29018), (3058, 26380), (5276, 15290), (5560, 14509), (6116, 13190), (6595, 12232), (7645, 10552)]