21121803

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{5113}}^1$

素因数の和:5145

約数の個数: 24

約数和(自身を含む): 33506928

約数和(自身を除く): 12385125

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 1377, 4131, 5113, 15339, 46017, 86921, 138051, 260763, 414153, 782289, 1242459, 2346867, 7040601, 21121803]

約数ペア:

[(1, 21121803), (3, 7040601), (9, 2346867), (17, 1242459), (27, 782289), (51, 414153), (81, 260763), (153, 138051), (243, 86921), (459, 46017), (1377, 15339), (4131, 5113)]