28004284

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:479

約数の個数: 72

約数和(自身を含む): 64350720

約数和(自身を除く): 36346436

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 124, 154, 196, 217, 308, 341, 419, 434, 539, 682, 838, 868, 1078, 1364, 1519, 1676, 2156, 2387, 2933, 3038, 4609, 4774, 5866, 6076, 9218, 9548, 11732, 12989, 16709, 18436, 20531, 25978, 32263, 33418, 41062, 51956, 64526, 66836, 82124, 90923, 129052, 142879, 181846, 225841, 285758, 363692, 451682, 571516, 636461, 903364, 1000153, 1272922, 2000306, 2545844, 4000612, 7001071, 14002142, 28004284]

約数ペア:

[(1, 28004284), (2, 14002142), (4, 7001071), (7, 4000612), (11, 2545844), (14, 2000306), (22, 1272922), (28, 1000153), (31, 903364), (44, 636461), (49, 571516), (62, 451682), (77, 363692), (98, 285758), (124, 225841), (154, 181846), (196, 142879), (217, 129052), (308, 90923), (341, 82124), (419, 66836), (434, 64526), (539, 51956), (682, 41062), (838, 33418), (868, 32263), (1078, 25978), (1364, 20531), (1519, 18436), (1676, 16709), (2156, 12989), (2387, 11732), (2933, 9548), (3038, 9218), (4609, 6076), (4774, 5866)]