28104560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:426

約数の個数: 80

約数和(自身を含む): 72182880

約数和(自身を除く): 44078320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 109, 110, 176, 218, 220, 293, 436, 440, 545, 586, 872, 880, 1090, 1172, 1199, 1465, 1744, 2180, 2344, 2398, 2930, 3223, 4360, 4688, 4796, 5860, 5995, 6446, 8720, 9592, 11720, 11990, 12892, 16115, 19184, 23440, 23980, 25784, 31937, 32230, 47960, 51568, 63874, 64460, 95920, 127748, 128920, 159685, 255496, 257840, 319370, 351307, 510992, 638740, 702614, 1277480, 1405228, 1756535, 2554960, 2810456, 3513070, 5620912, 7026140, 14052280, 28104560]

約数ペア:

[(1, 28104560), (2, 14052280), (4, 7026140), (5, 5620912), (8, 3513070), (10, 2810456), (11, 2554960), (16, 1756535), (20, 1405228), (22, 1277480), (40, 702614), (44, 638740), (55, 510992), (80, 351307), (88, 319370), (109, 257840), (110, 255496), (176, 159685), (218, 128920), (220, 127748), (293, 95920), (436, 64460), (440, 63874), (545, 51568), (586, 47960), (872, 32230), (880, 31937), (1090, 25784), (1172, 23980), (1199, 23440), (1465, 19184), (1744, 16115), (2180, 12892), (2344, 11990), (2398, 11720), (2930, 9592), (3223, 8720), (4360, 6446), (4688, 5995), (4796, 5860)]