20638268

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 43760640

約数和(自身を除く): 23122372

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 73, 92, 146, 161, 292, 322, 439, 511, 644, 878, 1022, 1679, 1756, 2044, 3073, 3358, 6146, 6716, 10097, 11753, 12292, 20194, 23506, 32047, 40388, 47012, 64094, 70679, 128188, 141358, 224329, 282716, 448658, 737081, 897316, 1474162, 2948324, 5159567, 10319134, 20638268]

約数ペア:

[(1, 20638268), (2, 10319134), (4, 5159567), (7, 2948324), (14, 1474162), (23, 897316), (28, 737081), (46, 448658), (73, 282716), (92, 224329), (146, 141358), (161, 128188), (292, 70679), (322, 64094), (439, 47012), (511, 40388), (644, 32047), (878, 23506), (1022, 20194), (1679, 12292), (1756, 11753), (2044, 10097), (3073, 6716), (3358, 6146)]