20807841621

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{89759}}^1$

素因数の和:89878

約数の個数: 48

約数和(自身を含む): 34381670400

約数和(自身を除く): 13573828779

約数列:

[1, 3, 7, 19, 21, 49, 57, 83, 133, 147, 249, 399, 581, 931, 1577, 1743, 2793, 4067, 4731, 11039, 12201, 33117, 77273, 89759, 231819, 269277, 628313, 1705421, 1884939, 4398191, 5116263, 7449997, 11937947, 13194573, 22349991, 35813841, 52149979, 83565629, 141549943, 156449937, 250696887, 365049853, 424649829, 990849601, 1095149559, 2972548803, 6935947207, 20807841621]

約数ペア:

[(1, 20807841621), (3, 6935947207), (7, 2972548803), (19, 1095149559), (21, 990849601), (49, 424649829), (57, 365049853), (83, 250696887), (133, 156449937), (147, 141549943), (249, 83565629), (399, 52149979), (581, 35813841), (931, 22349991), (1577, 13194573), (1743, 11937947), (2793, 7449997), (4067, 5116263), (4731, 4398191), (11039, 1884939), (12201, 1705421), (33117, 628313), (77273, 269277), (89759, 231819)]