19400020

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5419}}^1$

素因数の和:5607

約数の個数: 24

約数和(自身を含む): 40975200

約数和(自身を除く): 21575180

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5419, 10838, 21676, 27095, 54190, 108380, 970001, 1940002, 3880004, 4850005, 9700010, 19400020]

約数ペア:

[(1, 19400020), (2, 9700010), (4, 4850005), (5, 3880004), (10, 1940002), (20, 970001), (179, 108380), (358, 54190), (716, 27095), (895, 21676), (1790, 10838), (3580, 5419)]