19465180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{541}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 46984896

約数和(自身を除く): 27519716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 541, 1028, 1082, 1285, 1799, 2164, 2570, 2705, 3598, 3787, 5140, 5410, 7196, 7574, 8995, 10820, 15148, 17990, 18935, 35980, 37870, 75740, 139037, 278074, 556148, 695185, 973259, 1390370, 1946518, 2780740, 3893036, 4866295, 9732590, 19465180]

約数ペア:

[(1, 19465180), (2, 9732590), (4, 4866295), (5, 3893036), (7, 2780740), (10, 1946518), (14, 1390370), (20, 973259), (28, 695185), (35, 556148), (70, 278074), (140, 139037), (257, 75740), (514, 37870), (541, 35980), (1028, 18935), (1082, 17990), (1285, 15148), (1799, 10820), (2164, 8995), (2570, 7574), (2705, 7196), (3598, 5410), (3787, 5140)]