18771880

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5273}}^1$

素因数の和:5373

約数の個数: 32

約数和(自身を含む): 42719400

約数和(自身を除く): 23947520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5273, 10546, 21092, 26365, 42184, 52730, 105460, 210920, 469297, 938594, 1877188, 2346485, 3754376, 4692970, 9385940, 18771880]

約数ペア:

[(1, 18771880), (2, 9385940), (4, 4692970), (5, 3754376), (8, 2346485), (10, 1877188), (20, 938594), (40, 469297), (89, 210920), (178, 105460), (356, 52730), (445, 42184), (712, 26365), (890, 21092), (1780, 10546), (3560, 5273)]