115238980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 247529520

約数和(自身を除く): 132290540

約数列:

[1, 2, 4, 5, 10, 20, 89, 101, 178, 202, 356, 404, 445, 505, 641, 890, 1010, 1282, 1780, 2020, 2564, 3205, 6410, 8989, 12820, 17978, 35956, 44945, 57049, 64741, 89890, 114098, 129482, 179780, 228196, 258964, 285245, 323705, 570490, 647410, 1140980, 1294820, 5761949, 11523898, 23047796, 28809745, 57619490, 115238980]

約数ペア:

[(1, 115238980), (2, 57619490), (4, 28809745), (5, 23047796), (10, 11523898), (20, 5761949), (89, 1294820), (101, 1140980), (178, 647410), (202, 570490), (356, 323705), (404, 285245), (445, 258964), (505, 228196), (641, 179780), (890, 129482), (1010, 114098), (1282, 89890), (1780, 64741), (2020, 57049), (2564, 44945), (3205, 35956), (6410, 17978), (8989, 12820)]