20781724

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{1607}}^1$

素因数の和:1725

約数の個数: 24

約数和(自身を含む): 37685088

約数和(自身を除く): 16903364

約数列:

[1, 2, 4, 53, 61, 106, 122, 212, 244, 1607, 3214, 3233, 6428, 6466, 12932, 85171, 98027, 170342, 196054, 340684, 392108, 5195431, 10390862, 20781724]

約数ペア:

[(1, 20781724), (2, 10390862), (4, 5195431), (53, 392108), (61, 340684), (106, 196054), (122, 170342), (212, 98027), (244, 85171), (1607, 12932), (3214, 6466), (3233, 6428)]