20391446

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{463}}^1$

素因数の和:564

約数の個数: 24

約数和(自身を含む): 32881824

約数和(自身を除く): 12490378

約数列:

[1, 2, 19, 38, 61, 122, 361, 463, 722, 926, 1159, 2318, 8797, 17594, 22021, 28243, 44042, 56486, 167143, 334286, 536617, 1073234, 10195723, 20391446]

約数ペア:

[(1, 20391446), (2, 10195723), (19, 1073234), (38, 536617), (61, 334286), (122, 167143), (361, 56486), (463, 44042), (722, 28243), (926, 22021), (1159, 17594), (2318, 8797)]