21176944

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69661}}^1$

素因数の和:69688

約数の個数: 20

約数和(自身を含む): 43190440

約数和(自身を除く): 22013496

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69661, 139322, 278644, 557288, 1114576, 1323559, 2647118, 5294236, 10588472, 21176944]

約数ペア:

[(1, 21176944), (2, 10588472), (4, 5294236), (8, 2647118), (16, 1323559), (19, 1114576), (38, 557288), (76, 278644), (152, 139322), (304, 69661)]