21715376

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43781}}^1$

素因数の和:43820

約数の個数: 20

約数和(自身を含む): 43431744

約数和(自身を除く): 21716368

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43781, 87562, 175124, 350248, 700496, 1357211, 2714422, 5428844, 10857688, 21715376]

約数ペア:

[(1, 21715376), (2, 10857688), (4, 5428844), (8, 2714422), (16, 1357211), (31, 700496), (62, 350248), (124, 175124), (248, 87562), (496, 43781)]