21561936

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 61537728

約数和(自身を除く): 39975792

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 97, 132, 176, 194, 264, 291, 388, 421, 528, 582, 776, 842, 1067, 1164, 1263, 1552, 1684, 2134, 2328, 2526, 3201, 3368, 4268, 4631, 4656, 5052, 6402, 6736, 8536, 9262, 10104, 12804, 13893, 17072, 18524, 20208, 25608, 27786, 37048, 40837, 51216, 55572, 74096, 81674, 111144, 122511, 163348, 222288, 245022, 326696, 449207, 490044, 653392, 898414, 980088, 1347621, 1796828, 1960176, 2695242, 3593656, 5390484, 7187312, 10780968, 21561936]

約数ペア:

[(1, 21561936), (2, 10780968), (3, 7187312), (4, 5390484), (6, 3593656), (8, 2695242), (11, 1960176), (12, 1796828), (16, 1347621), (22, 980088), (24, 898414), (33, 653392), (44, 490044), (48, 449207), (66, 326696), (88, 245022), (97, 222288), (132, 163348), (176, 122511), (194, 111144), (264, 81674), (291, 74096), (388, 55572), (421, 51216), (528, 40837), (582, 37048), (776, 27786), (842, 25608), (1067, 20208), (1164, 18524), (1263, 17072), (1552, 13893), (1684, 12804), (2134, 10104), (2328, 9262), (2526, 8536), (3201, 6736), (3368, 6402), (4268, 5052), (4631, 4656)]