20158005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 40808448

約数和(自身を除く): 20650443

約数列:

[1, 3, 5, 7, 15, 17, 21, 23, 35, 51, 69, 85, 105, 115, 119, 161, 255, 345, 357, 391, 483, 491, 595, 805, 1173, 1473, 1785, 1955, 2415, 2455, 2737, 3437, 5865, 7365, 8211, 8347, 10311, 11293, 13685, 17185, 25041, 33879, 41055, 41735, 51555, 56465, 58429, 79051, 125205, 169395, 175287, 191981, 237153, 292145, 395255, 575943, 876435, 959905, 1185765, 1343867, 2879715, 4031601, 6719335, 20158005]

約数ペア:

[(1, 20158005), (3, 6719335), (5, 4031601), (7, 2879715), (15, 1343867), (17, 1185765), (21, 959905), (23, 876435), (35, 575943), (51, 395255), (69, 292145), (85, 237153), (105, 191981), (115, 175287), (119, 169395), (161, 125205), (255, 79051), (345, 58429), (357, 56465), (391, 51555), (483, 41735), (491, 41055), (595, 33879), (805, 25041), (1173, 17185), (1473, 13685), (1785, 11293), (1955, 10311), (2415, 8347), (2455, 8211), (2737, 7365), (3437, 5865)]