20211996

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3389}}^1$

素因数の和:3474

約数の個数: 48

約数和(自身を含む): 54673920

約数和(自身を除く): 34461924

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 142, 213, 284, 426, 497, 852, 994, 1491, 1988, 2982, 3389, 5964, 6778, 10167, 13556, 20334, 23723, 40668, 47446, 71169, 94892, 142338, 240619, 284676, 481238, 721857, 962476, 1443714, 1684333, 2887428, 3368666, 5052999, 6737332, 10105998, 20211996]

約数ペア:

[(1, 20211996), (2, 10105998), (3, 6737332), (4, 5052999), (6, 3368666), (7, 2887428), (12, 1684333), (14, 1443714), (21, 962476), (28, 721857), (42, 481238), (71, 284676), (84, 240619), (142, 142338), (213, 94892), (284, 71169), (426, 47446), (497, 40668), (852, 23723), (994, 20334), (1491, 13556), (1988, 10167), (2982, 6778), (3389, 5964)]