21250138

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2203}}^1$

素因数の和:2278

約数の個数: 32

約数和(自身を含む): 39989376

約数和(自身を除く): 18739238

約数列:

[1, 2, 7, 13, 14, 26, 53, 91, 106, 182, 371, 689, 742, 1378, 2203, 4406, 4823, 9646, 15421, 28639, 30842, 57278, 116759, 200473, 233518, 400946, 817313, 1517867, 1634626, 3035734, 10625069, 21250138]

約数ペア:

[(1, 21250138), (2, 10625069), (7, 3035734), (13, 1634626), (14, 1517867), (26, 817313), (53, 400946), (91, 233518), (106, 200473), (182, 116759), (371, 57278), (689, 30842), (742, 28639), (1378, 15421), (2203, 9646), (4406, 4823)]