20805620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5563}}^1$

素因数の和:5600

約数の個数: 48

約数和(自身を含む): 50476608

約数和(自身を除く): 29670988

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5563, 11126, 22252, 27815, 55630, 61193, 94571, 111260, 122386, 189142, 244772, 305965, 378284, 472855, 611930, 945710, 1040281, 1223860, 1891420, 2080562, 4161124, 5201405, 10402810, 20805620]

約数ペア:

[(1, 20805620), (2, 10402810), (4, 5201405), (5, 4161124), (10, 2080562), (11, 1891420), (17, 1223860), (20, 1040281), (22, 945710), (34, 611930), (44, 472855), (55, 378284), (68, 305965), (85, 244772), (110, 189142), (170, 122386), (187, 111260), (220, 94571), (340, 61193), (374, 55630), (748, 27815), (935, 22252), (1870, 11126), (3740, 5563)]