20941947

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2521}}^1$

素因数の和:2611

約数の個数: 24

約数和(自身を含む): 33048288

約数和(自身を除く): 12106341

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2521, 2769, 7563, 8307, 22689, 32773, 98319, 178991, 294957, 536973, 1610919, 2326883, 6980649, 20941947]

約数ペア:

[(1, 20941947), (3, 6980649), (9, 2326883), (13, 1610919), (39, 536973), (71, 294957), (117, 178991), (213, 98319), (639, 32773), (923, 22689), (2521, 8307), (2769, 7563)]