19717768

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4457}}^1$

素因数の和:4549

約数の個数: 32

約数和(自身を含む): 42796800

約数和(自身を除く): 23079032

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4457, 8914, 17828, 31199, 35656, 62398, 124796, 249592, 352103, 704206, 1408412, 2464721, 2816824, 4929442, 9858884, 19717768]

約数ペア:

[(1, 19717768), (2, 9858884), (4, 4929442), (7, 2816824), (8, 2464721), (14, 1408412), (28, 704206), (56, 352103), (79, 249592), (158, 124796), (316, 62398), (553, 35656), (632, 31199), (1106, 17828), (2212, 8914), (4424, 4457)]