21331408

素因数分解:

$2^4\times 7^1\times {\mathrm{283}}^1\times {\mathrm{673}}^1$

素因数の和:971

約数の個数: 40

約数和(自身を含む): 47471168

約数和(自身を除く): 26139760

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 283, 566, 673, 1132, 1346, 1981, 2264, 2692, 3962, 4528, 4711, 5384, 7924, 9422, 10768, 15848, 18844, 31696, 37688, 75376, 190459, 380918, 761836, 1333213, 1523672, 2666426, 3047344, 5332852, 10665704, 21331408]

約数ペア:

[(1, 21331408), (2, 10665704), (4, 5332852), (7, 3047344), (8, 2666426), (14, 1523672), (16, 1333213), (28, 761836), (56, 380918), (112, 190459), (283, 75376), (566, 37688), (673, 31696), (1132, 18844), (1346, 15848), (1981, 10768), (2264, 9422), (2692, 7924), (3962, 5384), (4528, 4711)]