20687966

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{631}}^1$

素因数の和:756

約数の個数: 24

約数和(自身を含む): 34002864

約数和(自身を除く): 13314898

約数列:

[1, 2, 13, 26, 97, 169, 194, 338, 631, 1261, 1262, 2522, 8203, 16393, 16406, 32786, 61207, 106639, 122414, 213278, 795691, 1591382, 10343983, 20687966]

約数ペア:

[(1, 20687966), (2, 10343983), (13, 1591382), (26, 795691), (97, 213278), (169, 122414), (194, 106639), (338, 61207), (631, 32786), (1261, 16406), (1262, 16393), (2522, 8203)]