81696340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{7901}}^1$

素因数の和:7968

約数の個数: 48

約数和(自身を含む): 191165184

約数和(自身を除く): 109468844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 470, 517, 940, 1034, 2068, 2585, 5170, 7901, 10340, 15802, 31604, 39505, 79010, 86911, 158020, 173822, 347644, 371347, 434555, 742694, 869110, 1485388, 1738220, 1856735, 3713470, 4084817, 7426940, 8169634, 16339268, 20424085, 40848170, 81696340]

約数ペア:

[(1, 81696340), (2, 40848170), (4, 20424085), (5, 16339268), (10, 8169634), (11, 7426940), (20, 4084817), (22, 3713470), (44, 1856735), (47, 1738220), (55, 1485388), (94, 869110), (110, 742694), (188, 434555), (220, 371347), (235, 347644), (470, 173822), (517, 158020), (940, 86911), (1034, 79010), (2068, 39505), (2585, 31604), (5170, 15802), (7901, 10340)]