18972308

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 33906600

約数和(自身を除く): 14934292

約数列:

[1, 2, 4, 89, 137, 178, 274, 356, 389, 548, 778, 1556, 12193, 24386, 34621, 48772, 53293, 69242, 106586, 138484, 213172, 4743077, 9486154, 18972308]

約数ペア:

[(1, 18972308), (2, 9486154), (4, 4743077), (89, 213172), (137, 138484), (178, 106586), (274, 69242), (356, 53293), (389, 48772), (548, 34621), (778, 24386), (1556, 12193)]