20846780

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1993}}^1$

素因数の和:2525

約数の個数: 24

約数和(自身を含む): 43883952

約数和(自身を除く): 23037172

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 1993, 2092, 2615, 3986, 5230, 7972, 9965, 10460, 19930, 39860, 1042339, 2084678, 4169356, 5211695, 10423390, 20846780]

約数ペア:

[(1, 20846780), (2, 10423390), (4, 5211695), (5, 4169356), (10, 2084678), (20, 1042339), (523, 39860), (1046, 19930), (1993, 10460), (2092, 9965), (2615, 7972), (3986, 5230)]