21076640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10133}}^1$

素因数の和:10161

約数の個数: 48

約数和(自身を含む): 53629128

約数和(自身を除く): 32552488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10133, 20266, 40532, 50665, 81064, 101330, 131729, 162128, 202660, 263458, 324256, 405320, 526916, 658645, 810640, 1053832, 1317290, 1621280, 2107664, 2634580, 4215328, 5269160, 10538320, 21076640]

約数ペア:

[(1, 21076640), (2, 10538320), (4, 5269160), (5, 4215328), (8, 2634580), (10, 2107664), (13, 1621280), (16, 1317290), (20, 1053832), (26, 810640), (32, 658645), (40, 526916), (52, 405320), (65, 324256), (80, 263458), (104, 202660), (130, 162128), (160, 131729), (208, 101330), (260, 81064), (416, 50665), (520, 40532), (1040, 20266), (2080, 10133)]