18295640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{967}}^1$

素因数の和:1032

約数の個数: 64

約数和(自身を含む): 45999360

約数和(自身を除く): 27703720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 967, 1720, 1892, 1934, 2365, 3784, 3868, 4730, 4835, 7736, 9460, 9670, 10637, 18920, 19340, 21274, 38680, 41581, 42548, 53185, 83162, 85096, 106370, 166324, 207905, 212740, 332648, 415810, 425480, 457391, 831620, 914782, 1663240, 1829564, 2286955, 3659128, 4573910, 9147820, 18295640]

約数ペア:

[(1, 18295640), (2, 9147820), (4, 4573910), (5, 3659128), (8, 2286955), (10, 1829564), (11, 1663240), (20, 914782), (22, 831620), (40, 457391), (43, 425480), (44, 415810), (55, 332648), (86, 212740), (88, 207905), (110, 166324), (172, 106370), (215, 85096), (220, 83162), (344, 53185), (430, 42548), (440, 41581), (473, 38680), (860, 21274), (946, 19340), (967, 18920), (1720, 10637), (1892, 9670), (1934, 9460), (2365, 7736), (3784, 4835), (3868, 4730)]