19900904

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{130927}}^1$

素因数の和:130952

約数の個数: 16

約数和(自身を含む): 39278400

約数和(自身を除く): 19377496

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 130927, 261854, 523708, 1047416, 2487613, 4975226, 9950452, 19900904]

約数ペア:

[(1, 19900904), (2, 9950452), (4, 4975226), (8, 2487613), (19, 1047416), (38, 523708), (76, 261854), (152, 130927)]