21006639

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{317}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 31418400

約数和(自身を除く): 10411761

約数列:

[1, 3, 9, 37, 111, 199, 317, 333, 597, 951, 1791, 2853, 7363, 11729, 22089, 35187, 63083, 66267, 105561, 189249, 567747, 2334071, 7002213, 21006639]

約数ペア:

[(1, 21006639), (3, 7002213), (9, 2334071), (37, 567747), (111, 189249), (199, 105561), (317, 66267), (333, 63083), (597, 35187), (951, 22089), (1791, 11729), (2853, 7363)]