21721167396

素因数分解:

$2^2\times 3^2\times {\mathrm{83}}^1\times {\mathrm{397}}^1\times {\mathrm{18311}}^1$

素因数の和:18801

約数の個数: 72

約数和(自身を含む): 55710817344

約数和(自身を除く): 33989649948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 83, 166, 249, 332, 397, 498, 747, 794, 996, 1191, 1494, 1588, 2382, 2988, 3573, 4764, 7146, 14292, 18311, 32951, 36622, 54933, 65902, 73244, 98853, 109866, 131804, 164799, 197706, 219732, 296559, 329598, 395412, 593118, 659196, 1186236, 1519813, 3039626, 4559439, 6079252, 7269467, 9118878, 13678317, 14538934, 18237756, 21808401, 27356634, 29077868, 43616802, 54713268, 65425203, 87233604, 130850406, 261700812, 603365761, 1206731522, 1810097283, 2413463044, 3620194566, 5430291849, 7240389132, 10860583698, 21721167396]

約数ペア:

[(1, 21721167396), (2, 10860583698), (3, 7240389132), (4, 5430291849), (6, 3620194566), (9, 2413463044), (12, 1810097283), (18, 1206731522), (36, 603365761), (83, 261700812), (166, 130850406), (249, 87233604), (332, 65425203), (397, 54713268), (498, 43616802), (747, 29077868), (794, 27356634), (996, 21808401), (1191, 18237756), (1494, 14538934), (1588, 13678317), (2382, 9118878), (2988, 7269467), (3573, 6079252), (4764, 4559439), (7146, 3039626), (14292, 1519813), (18311, 1186236), (32951, 659196), (36622, 593118), (54933, 395412), (65902, 329598), (73244, 296559), (98853, 219732), (109866, 197706), (131804, 164799)]