20802135

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{97}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 36874656

約数和(自身を除く): 16072521

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 97, 145, 255, 291, 435, 485, 493, 841, 1455, 1479, 1649, 2465, 2523, 2813, 4205, 4947, 7395, 8245, 8439, 12615, 14065, 14297, 24735, 42195, 42891, 47821, 71485, 81577, 143463, 214455, 239105, 244731, 407885, 717315, 1223655, 1386809, 4160427, 6934045, 20802135]

約数ペア:

[(1, 20802135), (3, 6934045), (5, 4160427), (15, 1386809), (17, 1223655), (29, 717315), (51, 407885), (85, 244731), (87, 239105), (97, 214455), (145, 143463), (255, 81577), (291, 71485), (435, 47821), (485, 42891), (493, 42195), (841, 24735), (1455, 14297), (1479, 14065), (1649, 12615), (2465, 8439), (2523, 8245), (2813, 7395), (4205, 4947)]