20478476

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{691}}^1$

素因数の和:965

約数の個数: 24

約数和(自身を含む): 37201920

約数和(自身を除く): 16723444

約数列:

[1, 2, 4, 31, 62, 124, 239, 478, 691, 956, 1382, 2764, 7409, 14818, 21421, 29636, 42842, 85684, 165149, 330298, 660596, 5119619, 10239238, 20478476]

約数ペア:

[(1, 20478476), (2, 10239238), (4, 5119619), (31, 660596), (62, 330298), (124, 165149), (239, 85684), (478, 42842), (691, 29636), (956, 21421), (1382, 14818), (2764, 7409)]