640876864

素因数分解:

$2^6\times {\mathrm{83}}^1\times {\mathrm{120647}}^1$

素因数の和:120742

約数の個数: 28

約数和(自身を含む): 1287072864

約数和(自身を除く): 646196000

約数列:

[1, 2, 4, 8, 16, 32, 64, 83, 166, 332, 664, 1328, 2656, 5312, 120647, 241294, 482588, 965176, 1930352, 3860704, 7721408, 10013701, 20027402, 40054804, 80109608, 160219216, 320438432, 640876864]

約数ペア:

[(1, 640876864), (2, 320438432), (4, 160219216), (8, 80109608), (16, 40054804), (32, 20027402), (64, 10013701), (83, 7721408), (166, 3860704), (332, 1930352), (664, 965176), (1328, 482588), (2656, 241294), (5312, 120647)]