19804598

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 14202442

約数列:

[1, 2, 11, 22, 31, 62, 71, 142, 341, 409, 682, 781, 818, 1562, 2201, 4402, 4499, 8998, 12679, 24211, 25358, 29039, 48422, 58078, 139469, 278938, 319429, 638858, 900209, 1800418, 9902299, 19804598]

約数ペア:

[(1, 19804598), (2, 9902299), (11, 1800418), (22, 900209), (31, 638858), (62, 319429), (71, 278938), (142, 139469), (341, 58078), (409, 48422), (682, 29039), (781, 25358), (818, 24211), (1562, 12679), (2201, 8998), (4402, 4499)]