21231376

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25037}}^1$

素因数の和:25098

約数の個数: 20

約数和(自身を含む): 41913612

約数和(自身を除く): 20682236

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25037, 50074, 100148, 200296, 400592, 1326961, 2653922, 5307844, 10615688, 21231376]

約数ペア:

[(1, 21231376), (2, 10615688), (4, 5307844), (8, 2653922), (16, 1326961), (53, 400592), (106, 200296), (212, 100148), (424, 50074), (848, 25037)]