21166870352

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69627863}}^1$

素因数の和:69627890

約数の個数: 20

約数和(自身を含む): 43169275680

約数和(自身を除く): 22002405328

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69627863, 139255726, 278511452, 557022904, 1114045808, 1322929397, 2645858794, 5291717588, 10583435176, 21166870352]

約数ペア:

[(1, 21166870352), (2, 10583435176), (4, 5291717588), (8, 2645858794), (16, 1322929397), (19, 1114045808), (38, 557022904), (76, 278511452), (152, 139255726), (304, 69627863)]