20944032016

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{3821}}^1$

素因数の和:4160

約数の個数: 80

約数和(自身を含む): 43040245248

約数和(自身を除く): 22096213232

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 257, 344, 496, 514, 688, 1028, 1333, 2056, 2666, 3821, 4112, 5332, 7642, 7967, 10664, 11051, 15284, 15934, 21328, 22102, 30568, 31868, 44204, 61136, 63736, 88408, 118451, 127472, 164303, 176816, 236902, 328606, 342581, 473804, 657212, 685162, 947608, 981997, 1314424, 1370324, 1895216, 1963994, 2628848, 2740648, 3927988, 5093393, 5481296, 7855976, 10186786, 15711952, 20373572, 30441907, 40747144, 42225871, 60883814, 81494288, 84451742, 121767628, 168903484, 243535256, 337806968, 487070512, 675613936, 1309002001, 2618004002, 5236008004, 10472016008, 20944032016]

約数ペア:

[(1, 20944032016), (2, 10472016008), (4, 5236008004), (8, 2618004002), (16, 1309002001), (31, 675613936), (43, 487070512), (62, 337806968), (86, 243535256), (124, 168903484), (172, 121767628), (248, 84451742), (257, 81494288), (344, 60883814), (496, 42225871), (514, 40747144), (688, 30441907), (1028, 20373572), (1333, 15711952), (2056, 10186786), (2666, 7855976), (3821, 5481296), (4112, 5093393), (5332, 3927988), (7642, 2740648), (7967, 2628848), (10664, 1963994), (11051, 1895216), (15284, 1370324), (15934, 1314424), (21328, 981997), (22102, 947608), (30568, 685162), (31868, 657212), (44204, 473804), (61136, 342581), (63736, 328606), (88408, 236902), (118451, 176816), (127472, 164303)]