20692280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1103}}^1$

素因数の和:1188

約数の個数: 64

約数和(自身を含む): 54051840

約数和(自身を除く): 33359560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1103, 1340, 1876, 2206, 2345, 2680, 3752, 4412, 4690, 5515, 7721, 8824, 9380, 11030, 15442, 18760, 22060, 30884, 38605, 44120, 61768, 73901, 77210, 147802, 154420, 295604, 308840, 369505, 517307, 591208, 739010, 1034614, 1478020, 2069228, 2586535, 2956040, 4138456, 5173070, 10346140, 20692280]

約数ペア:

[(1, 20692280), (2, 10346140), (4, 5173070), (5, 4138456), (7, 2956040), (8, 2586535), (10, 2069228), (14, 1478020), (20, 1034614), (28, 739010), (35, 591208), (40, 517307), (56, 369505), (67, 308840), (70, 295604), (134, 154420), (140, 147802), (268, 77210), (280, 73901), (335, 61768), (469, 44120), (536, 38605), (670, 30884), (938, 22060), (1103, 18760), (1340, 15442), (1876, 11030), (2206, 9380), (2345, 8824), (2680, 7721), (3752, 5515), (4412, 4690)]