20123840

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5717}}^1$

素因数の和:5745

約数の個数: 56

約数和(自身を含む): 52285392

約数和(自身を除く): 32161552

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 5717, 11434, 22868, 28585, 45736, 57170, 62887, 91472, 114340, 125774, 182944, 228680, 251548, 314435, 365888, 457360, 503096, 628870, 914720, 1006192, 1257740, 1829440, 2012384, 2515480, 4024768, 5030960, 10061920, 20123840]

約数ペア:

[(1, 20123840), (2, 10061920), (4, 5030960), (5, 4024768), (8, 2515480), (10, 2012384), (11, 1829440), (16, 1257740), (20, 1006192), (22, 914720), (32, 628870), (40, 503096), (44, 457360), (55, 365888), (64, 314435), (80, 251548), (88, 228680), (110, 182944), (160, 125774), (176, 114340), (220, 91472), (320, 62887), (352, 57170), (440, 45736), (704, 28585), (880, 22868), (1760, 11434), (3520, 5717)]