19681664

素因数分解:

$2^7\times {\mathrm{153763}}^1$

素因数の和:153777

約数の個数: 16

約数和(自身を含む): 39209820

約数和(自身を除く): 19528156

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 153763, 307526, 615052, 1230104, 2460208, 4920416, 9840832, 19681664]

約数ペア:

[(1, 19681664), (2, 9840832), (4, 4920416), (8, 2460208), (16, 1230104), (32, 615052), (64, 307526), (128, 153763)]