21402928

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{193}}^1\times {\mathrm{239}}^1$

素因数の和:469

約数の個数: 40

約数和(自身を含む): 43300800

約数和(自身を除く): 21897872

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 193, 232, 239, 386, 464, 478, 772, 956, 1544, 1912, 3088, 3824, 5597, 6931, 11194, 13862, 22388, 27724, 44776, 46127, 55448, 89552, 92254, 110896, 184508, 369016, 738032, 1337683, 2675366, 5350732, 10701464, 21402928]

約数ペア:

[(1, 21402928), (2, 10701464), (4, 5350732), (8, 2675366), (16, 1337683), (29, 738032), (58, 369016), (116, 184508), (193, 110896), (232, 92254), (239, 89552), (386, 55448), (464, 46127), (478, 44776), (772, 27724), (956, 22388), (1544, 13862), (1912, 11194), (3088, 6931), (3824, 5597)]