81685340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21841}}^1$

素因数の和:21878

約数の個数: 48

約数和(自身を含む): 198150624

約数和(自身を除く): 116465284

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, 21841, 43682, 87364, 109205, 218410, 240251, 371297, 436820, 480502, 742594, 961004, 1201255, 1485188, 1856485, 2402510, 3712970, 4084267, 4805020, 7425940, 8168534, 16337068, 20421335, 40842670, 81685340]

約数ペア:

[(1, 81685340), (2, 40842670), (4, 20421335), (5, 16337068), (10, 8168534), (11, 7425940), (17, 4805020), (20, 4084267), (22, 3712970), (34, 2402510), (44, 1856485), (55, 1485188), (68, 1201255), (85, 961004), (110, 742594), (170, 480502), (187, 436820), (220, 371297), (340, 240251), (374, 218410), (748, 109205), (935, 87364), (1870, 43682), (3740, 21841)]