19885552

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65413}}^1$

素因数の和:65440

約数の個数: 20

約数和(自身を含む): 40556680

約数和(自身を除く): 20671128

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65413, 130826, 261652, 523304, 1046608, 1242847, 2485694, 4971388, 9942776, 19885552]

約数ペア:

[(1, 19885552), (2, 9942776), (4, 4971388), (8, 2485694), (16, 1242847), (19, 1046608), (38, 523304), (76, 261652), (152, 130826), (304, 65413)]