28145480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1361}}^1$

素因数の和:1430

約数の個数: 64

約数和(自身を含む): 70606080

約数和(自身を除く): 42460600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1361, 1880, 2068, 2585, 2722, 4136, 5170, 5444, 6805, 10340, 10888, 13610, 14971, 20680, 27220, 29942, 54440, 59884, 63967, 74855, 119768, 127934, 149710, 255868, 299420, 319835, 511736, 598840, 639670, 703637, 1279340, 1407274, 2558680, 2814548, 3518185, 5629096, 7036370, 14072740, 28145480]

約数ペア:

[(1, 28145480), (2, 14072740), (4, 7036370), (5, 5629096), (8, 3518185), (10, 2814548), (11, 2558680), (20, 1407274), (22, 1279340), (40, 703637), (44, 639670), (47, 598840), (55, 511736), (88, 319835), (94, 299420), (110, 255868), (188, 149710), (220, 127934), (235, 119768), (376, 74855), (440, 63967), (470, 59884), (517, 54440), (940, 29942), (1034, 27220), (1361, 20680), (1880, 14971), (2068, 13610), (2585, 10888), (2722, 10340), (4136, 6805), (5170, 5444)]