21208797

素因数分解:

$3^6\times {\mathrm{47}}^1\times {\mathrm{619}}^1$

素因数の和:684

約数の個数: 28

約数和(自身を含む): 32527680

約数和(自身を除く): 11318883

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 619, 729, 1269, 1857, 3807, 5571, 11421, 16713, 29093, 34263, 50139, 87279, 150417, 261837, 451251, 785511, 2356533, 7069599, 21208797]

約数ペア:

[(1, 21208797), (3, 7069599), (9, 2356533), (27, 785511), (47, 451251), (81, 261837), (141, 150417), (243, 87279), (423, 50139), (619, 34263), (729, 29093), (1269, 16713), (1857, 11421), (3807, 5571)]