21276654

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{7561}}^1$

素因数の和:7640

約数の個数: 32

約数和(自身を含む): 49364736

約数和(自身を除く): 28088082

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 67, 134, 201, 402, 469, 938, 1407, 2814, 7561, 15122, 22683, 45366, 52927, 105854, 158781, 317562, 506587, 1013174, 1519761, 3039522, 3546109, 7092218, 10638327, 21276654]

約数ペア:

[(1, 21276654), (2, 10638327), (3, 7092218), (6, 3546109), (7, 3039522), (14, 1519761), (21, 1013174), (42, 506587), (67, 317562), (134, 158781), (201, 105854), (402, 52927), (469, 45366), (938, 22683), (1407, 15122), (2814, 7561)]