21026416

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3361}}^1$

素因数の和:3409

約数の個数: 40

約数和(自身を含む): 45023904

約数和(自身を除く): 23997488

約数列:

[1, 2, 4, 8, 16, 17, 23, 34, 46, 68, 92, 136, 184, 272, 368, 391, 782, 1564, 3128, 3361, 6256, 6722, 13444, 26888, 53776, 57137, 77303, 114274, 154606, 228548, 309212, 457096, 618424, 914192, 1236848, 1314151, 2628302, 5256604, 10513208, 21026416]

約数ペア:

[(1, 21026416), (2, 10513208), (4, 5256604), (8, 2628302), (16, 1314151), (17, 1236848), (23, 914192), (34, 618424), (46, 457096), (68, 309212), (92, 228548), (136, 154606), (184, 114274), (272, 77303), (368, 57137), (391, 53776), (782, 26888), (1564, 13444), (3128, 6722), (3361, 6256)]