21638001

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1993}}^1$

素因数の和:2061

約数の個数: 32

約数和(自身を含む): 36753408

約数和(自身を除く): 15115407

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 141, 231, 329, 517, 987, 1551, 1993, 3619, 5979, 10857, 13951, 21923, 41853, 65769, 93671, 153461, 281013, 460383, 655697, 1030381, 1967091, 3091143, 7212667, 21638001]

約数ペア:

[(1, 21638001), (3, 7212667), (7, 3091143), (11, 1967091), (21, 1030381), (33, 655697), (47, 460383), (77, 281013), (141, 153461), (231, 93671), (329, 65769), (517, 41853), (987, 21923), (1551, 13951), (1993, 10857), (3619, 5979)]