21931539

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{571}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 35143680

約数和(自身を除く): 13212141

約数列:

[1, 3, 7, 21, 31, 59, 93, 177, 217, 413, 571, 651, 1239, 1713, 1829, 3997, 5487, 11991, 12803, 17701, 33689, 38409, 53103, 101067, 123907, 235823, 371721, 707469, 1044359, 3133077, 7310513, 21931539]

約数ペア:

[(1, 21931539), (3, 7310513), (7, 3133077), (21, 1044359), (31, 707469), (59, 371721), (93, 235823), (177, 123907), (217, 101067), (413, 53103), (571, 38409), (651, 33689), (1239, 17701), (1713, 12803), (1829, 11991), (3997, 5487)]