21152802789

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{578467}}^1$

素因数の和:578729

約数の個数: 24

約数和(自身を含む): 32486762880

約数和(自身を除く): 11333960091

約数列:

[1, 3, 9, 17, 51, 153, 239, 717, 2151, 4063, 12189, 36567, 578467, 1735401, 5206203, 9833939, 29501817, 88505451, 138253613, 414760839, 1244282517, 2350311421, 7050934263, 21152802789]

約数ペア:

[(1, 21152802789), (3, 7050934263), (9, 2350311421), (17, 1244282517), (51, 414760839), (153, 138253613), (239, 88505451), (717, 29501817), (2151, 9833939), (4063, 5206203), (12189, 1735401), (36567, 578467)]