21465747

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{457}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 33008976

約数和(自身を除く): 11543229

約数列:

[1, 3, 9, 17, 51, 153, 307, 457, 921, 1371, 2763, 4113, 5219, 7769, 15657, 23307, 46971, 69921, 140299, 420897, 1262691, 2385083, 7155249, 21465747]

約数ペア:

[(1, 21465747), (3, 7155249), (9, 2385083), (17, 1262691), (51, 420897), (153, 140299), (307, 69921), (457, 46971), (921, 23307), (1371, 15657), (2763, 7769), (4113, 5219)]