21554109

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 10457091

約数列:

[1, 3, 9, 71, 89, 213, 267, 379, 639, 801, 1137, 3411, 6319, 18957, 26909, 33731, 56871, 80727, 101193, 242181, 303579, 2394901, 7184703, 21554109]

約数ペア:

[(1, 21554109), (3, 7184703), (9, 2394901), (71, 303579), (89, 242181), (213, 101193), (267, 80727), (379, 56871), (639, 33731), (801, 26909), (1137, 18957), (3411, 6319)]