21487796

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1304

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 23872204

約数列:

[1, 2, 4, 11, 17, 22, 23, 34, 44, 46, 68, 92, 187, 253, 374, 391, 506, 748, 782, 1012, 1249, 1564, 2498, 4301, 4996, 8602, 13739, 17204, 21233, 27478, 28727, 42466, 54956, 57454, 84932, 114908, 233563, 315997, 467126, 488359, 631994, 934252, 976718, 1263988, 1953436, 5371949, 10743898, 21487796]

約数ペア:

[(1, 21487796), (2, 10743898), (4, 5371949), (11, 1953436), (17, 1263988), (22, 976718), (23, 934252), (34, 631994), (44, 488359), (46, 467126), (68, 315997), (92, 233563), (187, 114908), (253, 84932), (374, 57454), (391, 54956), (506, 42466), (748, 28727), (782, 27478), (1012, 21233), (1249, 17204), (1564, 13739), (2498, 8602), (4301, 4996)]