21213297

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{683}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 17200143

約数列:

[1, 3, 7, 9, 17, 21, 29, 51, 63, 87, 119, 153, 203, 261, 357, 493, 609, 683, 1071, 1479, 1827, 2049, 3451, 4437, 4781, 6147, 10353, 11611, 14343, 19807, 31059, 34833, 43029, 59421, 81277, 104499, 138649, 178263, 243831, 336719, 415947, 731493, 1010157, 1247841, 2357033, 3030471, 7071099, 21213297]

約数ペア:

[(1, 21213297), (3, 7071099), (7, 3030471), (9, 2357033), (17, 1247841), (21, 1010157), (29, 731493), (51, 415947), (63, 336719), (87, 243831), (119, 178263), (153, 138649), (203, 104499), (261, 81277), (357, 59421), (493, 43029), (609, 34833), (683, 31059), (1071, 19807), (1479, 14343), (1827, 11611), (2049, 10353), (3451, 6147), (4437, 4781)]