18809675240

素因数分解:

$2^3\times 5^1\times {\mathrm{839}}^1\times {\mathrm{560479}}^1$

素因数の和:561329

約数の個数: 32

約数和(自身を含む): 42372288000

約数和(自身を除く): 23562612760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 839, 1678, 3356, 4195, 6712, 8390, 16780, 33560, 560479, 1120958, 2241916, 2802395, 4483832, 5604790, 11209580, 22419160, 470241881, 940483762, 1880967524, 2351209405, 3761935048, 4702418810, 9404837620, 18809675240]

約数ペア:

[(1, 18809675240), (2, 9404837620), (4, 4702418810), (5, 3761935048), (8, 2351209405), (10, 1880967524), (20, 940483762), (40, 470241881), (839, 22419160), (1678, 11209580), (3356, 5604790), (4195, 4483832), (6712, 2802395), (8390, 2241916), (16780, 1120958), (33560, 560479)]