12887960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 30412800

約数和(自身を除く): 17524840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 127, 172, 215, 236, 254, 295, 344, 430, 472, 508, 590, 635, 860, 1016, 1180, 1270, 1720, 2360, 2537, 2540, 5074, 5080, 5461, 7493, 10148, 10922, 12685, 14986, 20296, 21844, 25370, 27305, 29972, 37465, 43688, 50740, 54610, 59944, 74930, 101480, 109220, 149860, 218440, 299720, 322199, 644398, 1288796, 1610995, 2577592, 3221990, 6443980, 12887960]

約数ペア:

[(1, 12887960), (2, 6443980), (4, 3221990), (5, 2577592), (8, 1610995), (10, 1288796), (20, 644398), (40, 322199), (43, 299720), (59, 218440), (86, 149860), (118, 109220), (127, 101480), (172, 74930), (215, 59944), (236, 54610), (254, 50740), (295, 43688), (344, 37465), (430, 29972), (472, 27305), (508, 25370), (590, 21844), (635, 20296), (860, 14986), (1016, 12685), (1180, 10922), (1270, 10148), (1720, 7493), (2360, 5461), (2537, 5080), (2540, 5074)]