20478416

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2729}}^1$

素因数の和:2811

約数の個数: 40

約数和(自身を含む): 46038720

約数和(自身を除く): 25560304

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2729, 3752, 5458, 7504, 10916, 19103, 21832, 38206, 43664, 76412, 152824, 182843, 305648, 365686, 731372, 1279901, 1462744, 2559802, 2925488, 5119604, 10239208, 20478416]

約数ペア:

[(1, 20478416), (2, 10239208), (4, 5119604), (7, 2925488), (8, 2559802), (14, 1462744), (16, 1279901), (28, 731372), (56, 365686), (67, 305648), (112, 182843), (134, 152824), (268, 76412), (469, 43664), (536, 38206), (938, 21832), (1072, 19103), (1876, 10916), (2729, 7504), (3752, 5458)]