27550840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 64152000

約数和(自身を除く): 36601160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 89, 109, 142, 178, 218, 284, 355, 356, 436, 445, 545, 568, 710, 712, 872, 890, 1090, 1420, 1780, 2180, 2840, 3560, 4360, 6319, 7739, 9701, 12638, 15478, 19402, 25276, 30956, 31595, 38695, 38804, 48505, 50552, 61912, 63190, 77390, 77608, 97010, 126380, 154780, 194020, 252760, 309560, 388040, 688771, 1377542, 2755084, 3443855, 5510168, 6887710, 13775420, 27550840]

約数ペア:

[(1, 27550840), (2, 13775420), (4, 6887710), (5, 5510168), (8, 3443855), (10, 2755084), (20, 1377542), (40, 688771), (71, 388040), (89, 309560), (109, 252760), (142, 194020), (178, 154780), (218, 126380), (284, 97010), (355, 77608), (356, 77390), (436, 63190), (445, 61912), (545, 50552), (568, 48505), (710, 38804), (712, 38695), (872, 31595), (890, 30956), (1090, 25276), (1420, 19402), (1780, 15478), (2180, 12638), (2840, 9701), (3560, 7739), (4360, 6319)]