215978984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{2161}}^1$

素因数の和:2242

約数の個数: 48

約数和(自身を含む): 450841860

約数和(自身を除く): 234862876

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 961, 1612, 1922, 2161, 3224, 3844, 4322, 7688, 8644, 12493, 17288, 24986, 28093, 49972, 56186, 66991, 99944, 112372, 133982, 224744, 267964, 535928, 870883, 1741766, 2076721, 3483532, 4153442, 6967064, 8306884, 16613768, 26997373, 53994746, 107989492, 215978984]

約数ペア:

[(1, 215978984), (2, 107989492), (4, 53994746), (8, 26997373), (13, 16613768), (26, 8306884), (31, 6967064), (52, 4153442), (62, 3483532), (104, 2076721), (124, 1741766), (248, 870883), (403, 535928), (806, 267964), (961, 224744), (1612, 133982), (1922, 112372), (2161, 99944), (3224, 66991), (3844, 56186), (4322, 49972), (7688, 28093), (8644, 24986), (12493, 17288)]