28071940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1069}}^1$

素因数の和:1192

約数の個数: 48

約数和(自身を含む): 64174320

約数和(自身を除く): 36102380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 1010, 1069, 1313, 2020, 2138, 2626, 4276, 5252, 5345, 6565, 10690, 13130, 13897, 21380, 26260, 27794, 55588, 69485, 107969, 138970, 215938, 277940, 431876, 539845, 1079690, 1403597, 2159380, 2807194, 5614388, 7017985, 14035970, 28071940]

約数ペア:

[(1, 28071940), (2, 14035970), (4, 7017985), (5, 5614388), (10, 2807194), (13, 2159380), (20, 1403597), (26, 1079690), (52, 539845), (65, 431876), (101, 277940), (130, 215938), (202, 138970), (260, 107969), (404, 69485), (505, 55588), (1010, 27794), (1069, 26260), (1313, 21380), (2020, 13897), (2138, 13130), (2626, 10690), (4276, 6565), (5252, 5345)]