20787342

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{499}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 21980658

約数列:

[1, 2, 3, 6, 53, 106, 131, 159, 262, 318, 393, 499, 786, 998, 1497, 2994, 6943, 13886, 20829, 26447, 41658, 52894, 65369, 79341, 130738, 158682, 196107, 392214, 3464557, 6929114, 10393671, 20787342]

約数ペア:

[(1, 20787342), (2, 10393671), (3, 6929114), (6, 3464557), (53, 392214), (106, 196107), (131, 158682), (159, 130738), (262, 79341), (318, 65369), (393, 52894), (499, 41658), (786, 26447), (998, 20829), (1497, 13886), (2994, 6943)]