28017440

素因数分解:

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

素因数の和:15945

約数の個数: 48

約数和(自身を含む): 72213120

約数和(自身を除く): 44195680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 15919, 31838, 63676, 79595, 127352, 159190, 175109, 254704, 318380, 350218, 509408, 636760, 700436, 875545, 1273520, 1400872, 1751090, 2547040, 2801744, 3502180, 5603488, 7004360, 14008720, 28017440]

約数ペア:

[(1, 28017440), (2, 14008720), (4, 7004360), (5, 5603488), (8, 3502180), (10, 2801744), (11, 2547040), (16, 1751090), (20, 1400872), (22, 1273520), (32, 875545), (40, 700436), (44, 636760), (55, 509408), (80, 350218), (88, 318380), (110, 254704), (160, 175109), (176, 159190), (220, 127352), (352, 79595), (440, 63676), (880, 31838), (1760, 15919)]