21668336

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:162

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 26141104

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 41, 58, 67, 68, 82, 116, 134, 136, 164, 232, 268, 272, 328, 464, 493, 536, 656, 697, 986, 1072, 1139, 1189, 1394, 1943, 1972, 2278, 2378, 2747, 2788, 3886, 3944, 4556, 4756, 5494, 5576, 7772, 7888, 9112, 9512, 10988, 11152, 15544, 18224, 19024, 20213, 21976, 31088, 33031, 40426, 43952, 46699, 66062, 79663, 80852, 93398, 132124, 159326, 161704, 186796, 264248, 318652, 323408, 373592, 528496, 637304, 747184, 1274608, 1354271, 2708542, 5417084, 10834168, 21668336]

約数ペア:

[(1, 21668336), (2, 10834168), (4, 5417084), (8, 2708542), (16, 1354271), (17, 1274608), (29, 747184), (34, 637304), (41, 528496), (58, 373592), (67, 323408), (68, 318652), (82, 264248), (116, 186796), (134, 161704), (136, 159326), (164, 132124), (232, 93398), (268, 80852), (272, 79663), (328, 66062), (464, 46699), (493, 43952), (536, 40426), (656, 33031), (697, 31088), (986, 21976), (1072, 20213), (1139, 19024), (1189, 18224), (1394, 15544), (1943, 11152), (1972, 10988), (2278, 9512), (2378, 9112), (2747, 7888), (2788, 7772), (3886, 5576), (3944, 5494), (4556, 4756)]