21339810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1867}}^1$

素因数の和:2007

約数の個数: 48

約数和(自身を含む): 55950336

約数和(自身を除く): 34610526

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 127, 254, 381, 635, 762, 1143, 1270, 1867, 1905, 2286, 3734, 3810, 5601, 5715, 9335, 11202, 11430, 16803, 18670, 28005, 33606, 56010, 84015, 168030, 237109, 474218, 711327, 1185545, 1422654, 2133981, 2371090, 3556635, 4267962, 7113270, 10669905, 21339810]

約数ペア:

[(1, 21339810), (2, 10669905), (3, 7113270), (5, 4267962), (6, 3556635), (9, 2371090), (10, 2133981), (15, 1422654), (18, 1185545), (30, 711327), (45, 474218), (90, 237109), (127, 168030), (254, 84015), (381, 56010), (635, 33606), (762, 28005), (1143, 18670), (1270, 16803), (1867, 11430), (1905, 11202), (2286, 9335), (3734, 5715), (3810, 5601)]