21990254

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3343}}^1$

素因数の和:3392

約数の個数: 32

約数和(自身を含む): 40449024

約数和(自身を除く): 18458770

約数列:

[1, 2, 11, 13, 22, 23, 26, 46, 143, 253, 286, 299, 506, 598, 3289, 3343, 6578, 6686, 36773, 43459, 73546, 76889, 86918, 153778, 478049, 845779, 956098, 999557, 1691558, 1999114, 10995127, 21990254]

約数ペア:

[(1, 21990254), (2, 10995127), (11, 1999114), (13, 1691558), (22, 999557), (23, 956098), (26, 845779), (46, 478049), (143, 153778), (253, 86918), (286, 76889), (299, 73546), (506, 43459), (598, 36773), (3289, 6686), (3343, 6578)]