21167154140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1217903}}^1$

素因数の和:1218002

約数の個数: 48

約数和(自身を含む): 49105889280

約数和(自身を除く): 27938735140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 3476, 4345, 8690, 17380, 1217903, 2435806, 4871612, 6089515, 12179030, 13396933, 24358060, 26793866, 53587732, 66984665, 96214337, 133969330, 192428674, 267938660, 384857348, 481071685, 962143370, 1058357707, 1924286740, 2116715414, 4233430828, 5291788535, 10583577070, 21167154140]

約数ペア:

[(1, 21167154140), (2, 10583577070), (4, 5291788535), (5, 4233430828), (10, 2116715414), (11, 1924286740), (20, 1058357707), (22, 962143370), (44, 481071685), (55, 384857348), (79, 267938660), (110, 192428674), (158, 133969330), (220, 96214337), (316, 66984665), (395, 53587732), (790, 26793866), (869, 24358060), (1580, 13396933), (1738, 12179030), (3476, 6089515), (4345, 4871612), (8690, 2435806), (17380, 1217903)]