21041007

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{883}}^1$

素因数の和:959

約数の個数: 24

約数和(自身を含む): 31060224

約数和(自身を除く): 10019217

約数列:

[1, 3, 13, 39, 47, 141, 169, 507, 611, 883, 1833, 2649, 7943, 11479, 23829, 34437, 41501, 124503, 149227, 447681, 539513, 1618539, 7013669, 21041007]

約数ペア:

[(1, 21041007), (3, 7013669), (13, 1618539), (39, 539513), (47, 447681), (141, 149227), (169, 124503), (507, 41501), (611, 34437), (883, 23829), (1833, 11479), (2649, 7943)]