21016641

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 33445440

約数和(自身を除く): 12428799

約数列:

[1, 3, 17, 19, 23, 41, 51, 57, 69, 123, 323, 391, 437, 529, 697, 779, 943, 969, 1173, 1311, 1587, 2091, 2337, 2829, 7429, 8993, 10051, 13243, 16031, 17917, 21689, 22287, 26979, 30153, 39729, 48093, 53751, 65067, 170867, 304589, 368713, 412091, 512601, 913767, 1106139, 1236273, 7005547, 21016641]

約数ペア:

[(1, 21016641), (3, 7005547), (17, 1236273), (19, 1106139), (23, 913767), (41, 512601), (51, 412091), (57, 368713), (69, 304589), (123, 170867), (323, 65067), (391, 53751), (437, 48093), (529, 39729), (697, 30153), (779, 26979), (943, 22287), (969, 21689), (1173, 17917), (1311, 16031), (1587, 13243), (2091, 10051), (2337, 8993), (2829, 7429)]