20161218008

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1\times {\mathrm{6871}}^1$

素因数の和:7368

約数の個数: 64

約数和(自身を含む): 40611870720

約数和(自身を除く): 20450652712

約数列:

[1, 2, 4, 8, 23, 37, 46, 74, 92, 148, 184, 296, 431, 851, 862, 1702, 1724, 3404, 3448, 6808, 6871, 9913, 13742, 15947, 19826, 27484, 31894, 39652, 54968, 63788, 79304, 127576, 158033, 254227, 316066, 366781, 508454, 632132, 733562, 1016908, 1264264, 1467124, 2033816, 2934248, 2961401, 5847221, 5922802, 11694442, 11845604, 23388884, 23691208, 46777768, 68112223, 109571837, 136224446, 219143674, 272448892, 438287348, 544897784, 876574696, 2520152251, 5040304502, 10080609004, 20161218008]

約数ペア:

[(1, 20161218008), (2, 10080609004), (4, 5040304502), (8, 2520152251), (23, 876574696), (37, 544897784), (46, 438287348), (74, 272448892), (92, 219143674), (148, 136224446), (184, 109571837), (296, 68112223), (431, 46777768), (851, 23691208), (862, 23388884), (1702, 11845604), (1724, 11694442), (3404, 5922802), (3448, 5847221), (6808, 2961401), (6871, 2934248), (9913, 2033816), (13742, 1467124), (15947, 1264264), (19826, 1016908), (27484, 733562), (31894, 632132), (39652, 508454), (54968, 366781), (63788, 316066), (79304, 254227), (127576, 158033)]