20448468

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:365

約数の個数: 72

約数和(自身を含む): 54302976

約数和(自身を除く): 33854508

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 73, 93, 124, 146, 186, 219, 251, 279, 292, 372, 438, 502, 558, 657, 753, 876, 1004, 1116, 1314, 1506, 2259, 2263, 2628, 3012, 4518, 4526, 6789, 7781, 9036, 9052, 13578, 15562, 18323, 20367, 23343, 27156, 31124, 36646, 40734, 46686, 54969, 70029, 73292, 81468, 93372, 109938, 140058, 164907, 219876, 280116, 329814, 568013, 659628, 1136026, 1704039, 2272052, 3408078, 5112117, 6816156, 10224234, 20448468]

約数ペア:

[(1, 20448468), (2, 10224234), (3, 6816156), (4, 5112117), (6, 3408078), (9, 2272052), (12, 1704039), (18, 1136026), (31, 659628), (36, 568013), (62, 329814), (73, 280116), (93, 219876), (124, 164907), (146, 140058), (186, 109938), (219, 93372), (251, 81468), (279, 73292), (292, 70029), (372, 54969), (438, 46686), (502, 40734), (558, 36646), (657, 31124), (753, 27156), (876, 23343), (1004, 20367), (1116, 18323), (1314, 15562), (1506, 13578), (2259, 9052), (2263, 9036), (2628, 7781), (3012, 6789), (4518, 4526)]