18865863

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:160

約数の個数: 36

約数和(自身を含む): 29566680

約数和(自身を除く): 10700817

約数列:

[1, 3, 9, 29, 41, 43, 87, 123, 129, 261, 369, 387, 1189, 1247, 1681, 1763, 3567, 3741, 5043, 5289, 10701, 11223, 15129, 15867, 48749, 51127, 72283, 146247, 153381, 216849, 438741, 460143, 650547, 2096207, 6288621, 18865863]

約数ペア:

[(1, 18865863), (3, 6288621), (9, 2096207), (29, 650547), (41, 460143), (43, 438741), (87, 216849), (123, 153381), (129, 146247), (261, 72283), (369, 51127), (387, 48749), (1189, 15867), (1247, 15129), (1681, 11223), (1763, 10701), (3567, 5289), (3741, 5043)]