28939988

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{433}}^1$

素因数の和:493

約数の個数: 72

約数和(自身を含む): 66495744

約数和(自身を除く): 37555756

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 124, 154, 196, 217, 308, 341, 433, 434, 539, 682, 866, 868, 1078, 1364, 1519, 1732, 2156, 2387, 3031, 3038, 4763, 4774, 6062, 6076, 9526, 9548, 12124, 13423, 16709, 19052, 21217, 26846, 33341, 33418, 42434, 53692, 66682, 66836, 84868, 93961, 133364, 147653, 187922, 233387, 295306, 375844, 466774, 590612, 657727, 933548, 1033571, 1315454, 2067142, 2630908, 4134284, 7234997, 14469994, 28939988]

約数ペア:

[(1, 28939988), (2, 14469994), (4, 7234997), (7, 4134284), (11, 2630908), (14, 2067142), (22, 1315454), (28, 1033571), (31, 933548), (44, 657727), (49, 590612), (62, 466774), (77, 375844), (98, 295306), (124, 233387), (154, 187922), (196, 147653), (217, 133364), (308, 93961), (341, 84868), (433, 66836), (434, 66682), (539, 53692), (682, 42434), (866, 33418), (868, 33341), (1078, 26846), (1364, 21217), (1519, 19052), (1732, 16709), (2156, 13423), (2387, 12124), (3031, 9548), (3038, 9526), (4763, 6076), (4774, 6062)]