21891070

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2111}}^1$

素因数の和:2196

約数の個数: 32

約数和(自身を含む): 42425856

約数和(自身を除く): 20534786

約数列:

[1, 2, 5, 10, 17, 34, 61, 85, 122, 170, 305, 610, 1037, 2074, 2111, 4222, 5185, 10370, 10555, 21110, 35887, 71774, 128771, 179435, 257542, 358870, 643855, 1287710, 2189107, 4378214, 10945535, 21891070]

約数ペア:

[(1, 21891070), (2, 10945535), (5, 4378214), (10, 2189107), (17, 1287710), (34, 643855), (61, 358870), (85, 257542), (122, 179435), (170, 128771), (305, 71774), (610, 35887), (1037, 21110), (2074, 10555), (2111, 10370), (4222, 5185)]