19868427

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 32348160

約数和(自身を除く): 12479733

約数列:

[1, 3, 9, 17, 31, 51, 59, 71, 93, 153, 177, 213, 279, 527, 531, 639, 1003, 1207, 1581, 1829, 2201, 3009, 3621, 4189, 4743, 5487, 6603, 9027, 10863, 12567, 16461, 19809, 31093, 37417, 37701, 71213, 93279, 112251, 129859, 213639, 279837, 336753, 389577, 640917, 1168731, 2207603, 6622809, 19868427]

約数ペア:

[(1, 19868427), (3, 6622809), (9, 2207603), (17, 1168731), (31, 640917), (51, 389577), (59, 336753), (71, 279837), (93, 213639), (153, 129859), (177, 112251), (213, 93279), (279, 71213), (527, 37701), (531, 37417), (639, 31093), (1003, 19809), (1207, 16461), (1581, 12567), (1829, 10863), (2201, 9027), (3009, 6603), (3621, 5487), (4189, 4743)]