19916109

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 29652480

約数和(自身を除く): 9736371

約数列:

[1, 3, 9, 47, 141, 197, 239, 423, 591, 717, 1773, 2151, 9259, 11233, 27777, 33699, 47083, 83331, 101097, 141249, 423747, 2212901, 6638703, 19916109]

約数ペア:

[(1, 19916109), (3, 6638703), (9, 2212901), (47, 423747), (141, 141249), (197, 101097), (239, 83331), (423, 47083), (591, 33699), (717, 27777), (1773, 11233), (2151, 9259)]