21130683

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 33423360

約数和(自身を除く): 12292677

約数列:

[1, 3, 7, 21, 47, 79, 141, 237, 271, 329, 553, 813, 987, 1659, 1897, 3713, 5691, 11139, 12737, 21409, 25991, 38211, 64227, 77973, 89159, 149863, 267477, 449589, 1006223, 3018669, 7043561, 21130683]

約数ペア:

[(1, 21130683), (3, 7043561), (7, 3018669), (21, 1006223), (47, 449589), (79, 267477), (141, 149863), (237, 89159), (271, 77973), (329, 64227), (553, 38211), (813, 25991), (987, 21409), (1659, 12737), (1897, 11139), (3713, 5691)]