19741953

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 34637760

約数和(自身を除く): 14895807

約数列:

[1, 3, 7, 11, 21, 29, 33, 49, 77, 87, 147, 203, 231, 319, 421, 539, 609, 957, 1263, 1421, 1617, 2233, 2947, 4263, 4631, 6699, 8841, 12209, 13893, 15631, 20629, 32417, 36627, 46893, 61887, 85463, 97251, 134299, 226919, 256389, 402897, 598241, 680757, 940093, 1794723, 2820279, 6580651, 19741953]

約数ペア:

[(1, 19741953), (3, 6580651), (7, 2820279), (11, 1794723), (21, 940093), (29, 680757), (33, 598241), (49, 402897), (77, 256389), (87, 226919), (147, 134299), (203, 97251), (231, 85463), (319, 61887), (421, 46893), (539, 36627), (609, 32417), (957, 20629), (1263, 15631), (1421, 13893), (1617, 12209), (2233, 8841), (2947, 6699), (4263, 4631)]