19996605796

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1\times {\mathrm{1321}}^1$

素因数の和:1936

約数の個数: 48

約数和(自身を含む): 35849625840

約数和(自身を除く): 15853020044

約数列:

[1, 2, 4, 89, 101, 178, 202, 356, 404, 421, 842, 1321, 1684, 2642, 5284, 8989, 17978, 35956, 37469, 42521, 74938, 85042, 117569, 133421, 149876, 170084, 235138, 266842, 470276, 533684, 556141, 1112282, 2224564, 3784369, 7568738, 11874469, 15137476, 23748938, 47497876, 49496549, 56170241, 98993098, 112340482, 197986196, 224680964, 4999151449, 9998302898, 19996605796]

約数ペア:

[(1, 19996605796), (2, 9998302898), (4, 4999151449), (89, 224680964), (101, 197986196), (178, 112340482), (202, 98993098), (356, 56170241), (404, 49496549), (421, 47497876), (842, 23748938), (1321, 15137476), (1684, 11874469), (2642, 7568738), (5284, 3784369), (8989, 2224564), (17978, 1112282), (35956, 556141), (37469, 533684), (42521, 470276), (74938, 266842), (85042, 235138), (117569, 170084), (133421, 149876)]