20407216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67129}}^1$

素因数の和:67156

約数の個数: 20

約数和(自身を含む): 41620600

約数和(自身を除く): 21213384

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67129, 134258, 268516, 537032, 1074064, 1275451, 2550902, 5101804, 10203608, 20407216]

約数ペア:

[(1, 20407216), (2, 10203608), (4, 5101804), (8, 2550902), (16, 1275451), (19, 1074064), (38, 537032), (76, 268516), (152, 134258), (304, 67129)]