21310384

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78347}}^1$

素因数の和:78372

約数の個数: 20

約数和(自身を含む): 43718184

約数和(自身を除く): 22407800

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78347, 156694, 313388, 626776, 1253552, 1331899, 2663798, 5327596, 10655192, 21310384]

約数ペア:

[(1, 21310384), (2, 10655192), (4, 5327596), (8, 2663798), (16, 1331899), (17, 1253552), (34, 626776), (68, 313388), (136, 156694), (272, 78347)]