81817892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{2447}}^1$

素因数の和:3107

約数の個数: 24

約数和(自身を含む): 154498176

約数和(自身を除く): 72680284

約数列:

[1, 2, 4, 13, 26, 52, 643, 1286, 2447, 2572, 4894, 8359, 9788, 16718, 31811, 33436, 63622, 127244, 1573421, 3146842, 6293684, 20454473, 40908946, 81817892]

約数ペア:

[(1, 81817892), (2, 40908946), (4, 20454473), (13, 6293684), (26, 3146842), (52, 1573421), (643, 127244), (1286, 63622), (2447, 33436), (2572, 31811), (4894, 16718), (8359, 9788)]