21022918

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 37140480

約数和(自身を除く): 16117562

約数列:

[1, 2, 7, 14, 61, 103, 122, 206, 239, 427, 478, 721, 854, 1442, 1673, 3346, 6283, 12566, 14579, 24617, 29158, 43981, 49234, 87962, 102053, 172319, 204106, 344638, 1501637, 3003274, 10511459, 21022918]

約数ペア:

[(1, 21022918), (2, 10511459), (7, 3003274), (14, 1501637), (61, 344638), (103, 204106), (122, 172319), (206, 102053), (239, 87962), (427, 49234), (478, 43981), (721, 29158), (854, 24617), (1442, 14579), (1673, 12566), (3346, 6283)]