21318712

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{2137}}^1$

素因数の和:2215

約数の個数: 32

約数和(自身を含む): 42332400

約数和(自身を除く): 21013688

約数列:

[1, 2, 4, 8, 29, 43, 58, 86, 116, 172, 232, 344, 1247, 2137, 2494, 4274, 4988, 8548, 9976, 17096, 61973, 91891, 123946, 183782, 247892, 367564, 495784, 735128, 2664839, 5329678, 10659356, 21318712]

約数ペア:

[(1, 21318712), (2, 10659356), (4, 5329678), (8, 2664839), (29, 735128), (43, 495784), (58, 367564), (86, 247892), (116, 183782), (172, 123946), (232, 91891), (344, 61973), (1247, 17096), (2137, 9976), (2494, 8548), (4274, 4988)]