64697180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 140174496

約数和(自身を除く): 75477316

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 257, 307, 410, 514, 614, 820, 1028, 1228, 1285, 1535, 2570, 3070, 5140, 6140, 10537, 12587, 21074, 25174, 42148, 50348, 52685, 62935, 78899, 105370, 125870, 157798, 210740, 251740, 315596, 394495, 788990, 1577980, 3234859, 6469718, 12939436, 16174295, 32348590, 64697180]

約数ペア:

[(1, 64697180), (2, 32348590), (4, 16174295), (5, 12939436), (10, 6469718), (20, 3234859), (41, 1577980), (82, 788990), (164, 394495), (205, 315596), (257, 251740), (307, 210740), (410, 157798), (514, 125870), (614, 105370), (820, 78899), (1028, 62935), (1228, 52685), (1285, 50348), (1535, 42148), (2570, 25174), (3070, 21074), (5140, 12587), (6140, 10537)]