21777273

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{8431}}^1$

素因数の和:8485

約数の個数: 24

約数和(自身を含む): 36830976

約数和(自身を除く): 15053703

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 8431, 25293, 59017, 75879, 177051, 345671, 531153, 1037013, 2419697, 3111039, 7259091, 21777273]

約数ペア:

[(1, 21777273), (3, 7259091), (7, 3111039), (9, 2419697), (21, 1037013), (41, 531153), (63, 345671), (123, 177051), (287, 75879), (369, 59017), (861, 25293), (2583, 8431)]