20158960

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3761}}^1$

素因数の和:3841

約数の個数: 40

約数和(自身を含む): 47581776

約数和(自身を除く): 27422816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3761, 5360, 7522, 15044, 18805, 30088, 37610, 60176, 75220, 150440, 251987, 300880, 503974, 1007948, 1259935, 2015896, 2519870, 4031792, 5039740, 10079480, 20158960]

約数ペア:

[(1, 20158960), (2, 10079480), (4, 5039740), (5, 4031792), (8, 2519870), (10, 2015896), (16, 1259935), (20, 1007948), (40, 503974), (67, 300880), (80, 251987), (134, 150440), (268, 75220), (335, 60176), (536, 37610), (670, 30088), (1072, 18805), (1340, 15044), (2680, 7522), (3761, 5360)]