19781567288

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{4255931}}^1$

素因数の和:4256027

約数の個数: 32

約数和(自身を含む): 42899794560

約数和(自身を除く): 23118227272

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 581, 664, 1162, 2324, 4648, 4255931, 8511862, 17023724, 29791517, 34047448, 59583034, 119166068, 238332136, 353242273, 706484546, 1412969092, 2472695911, 2825938184, 4945391822, 9890783644, 19781567288]

約数ペア:

[(1, 19781567288), (2, 9890783644), (4, 4945391822), (7, 2825938184), (8, 2472695911), (14, 1412969092), (28, 706484546), (56, 353242273), (83, 238332136), (166, 119166068), (332, 59583034), (581, 34047448), (664, 29791517), (1162, 17023724), (2324, 8511862), (4648, 4255931)]