21383816

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140683}}^1$

素因数の和:140708

約数の個数: 16

約数和(自身を含む): 42205200

約数和(自身を除く): 20821384

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140683, 281366, 562732, 1125464, 2672977, 5345954, 10691908, 21383816]

約数ペア:

[(1, 21383816), (2, 10691908), (4, 5345954), (8, 2672977), (19, 1125464), (38, 562732), (76, 281366), (152, 140683)]