21013080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{15919}}^1$

素因数の和:15944

約数の個数: 64

約数和(自身を含む): 68774400

約数和(自身を除く): 47761320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 15919, 31838, 47757, 63676, 79595, 95514, 127352, 159190, 175109, 191028, 238785, 318380, 350218, 382056, 477570, 525327, 636760, 700436, 875545, 955140, 1050654, 1400872, 1751090, 1910280, 2101308, 2626635, 3502180, 4202616, 5253270, 7004360, 10506540, 21013080]

約数ペア:

[(1, 21013080), (2, 10506540), (3, 7004360), (4, 5253270), (5, 4202616), (6, 3502180), (8, 2626635), (10, 2101308), (11, 1910280), (12, 1751090), (15, 1400872), (20, 1050654), (22, 955140), (24, 875545), (30, 700436), (33, 636760), (40, 525327), (44, 477570), (55, 382056), (60, 350218), (66, 318380), (88, 238785), (110, 191028), (120, 175109), (132, 159190), (165, 127352), (220, 95514), (264, 79595), (330, 63676), (440, 47757), (660, 31838), (1320, 15919)]