21807182878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{359}}^1\times {\mathrm{647}}^1$

素因数の和:1201

約数の個数: 64

約数和(自身を含む): 37153105920

約数和(自身を除く): 15345923042

約数列:

[1, 2, 13, 23, 26, 46, 157, 299, 314, 359, 598, 647, 718, 1294, 2041, 3611, 4082, 4667, 7222, 8257, 8411, 9334, 14881, 16514, 16822, 29762, 46943, 56363, 93886, 101579, 107341, 112726, 193453, 203158, 214682, 232273, 386906, 464546, 732719, 1296349, 1320527, 1465438, 2336317, 2592698, 2641054, 3019549, 4672634, 5342279, 6039098, 10684558, 16852537, 30372121, 33705074, 36466861, 60744242, 69449627, 72933722, 138899254, 474069193, 838737803, 948138386, 1677475606, 10903591439, 21807182878]

約数ペア:

[(1, 21807182878), (2, 10903591439), (13, 1677475606), (23, 948138386), (26, 838737803), (46, 474069193), (157, 138899254), (299, 72933722), (314, 69449627), (359, 60744242), (598, 36466861), (647, 33705074), (718, 30372121), (1294, 16852537), (2041, 10684558), (3611, 6039098), (4082, 5342279), (4667, 4672634), (7222, 3019549), (8257, 2641054), (8411, 2592698), (9334, 2336317), (14881, 1465438), (16514, 1320527), (16822, 1296349), (29762, 732719), (46943, 464546), (56363, 386906), (93886, 232273), (101579, 214682), (107341, 203158), (112726, 193453)]