21261891843

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{373}}^1\times {\mathrm{147293}}^1$

素因数の和:147715

約数の個数: 24

約数和(自身を含む): 31510310832

約数和(自身を除く): 10248418989

約数列:

[1, 3, 9, 43, 129, 373, 387, 1119, 3357, 16039, 48117, 144351, 147293, 441879, 1325637, 6333599, 19000797, 54940289, 57002391, 164820867, 494462601, 2362432427, 7087297281, 21261891843]

約数ペア:

[(1, 21261891843), (3, 7087297281), (9, 2362432427), (43, 494462601), (129, 164820867), (373, 57002391), (387, 54940289), (1119, 19000797), (3357, 6333599), (16039, 1325637), (48117, 441879), (144351, 147293)]