168987987

素因数分解:

$3^2\times 7^1\times {\mathrm{1231}}^1\times {\mathrm{2179}}^1$

素因数の和:3423

約数の個数: 24

約数和(自身を含む): 279319040

約数和(自身を除く): 110331053

約数列:

[1, 3, 7, 9, 21, 63, 1231, 2179, 3693, 6537, 8617, 11079, 15253, 19611, 25851, 45759, 77553, 137277, 2682349, 8047047, 18776443, 24141141, 56329329, 168987987]

約数ペア:

[(1, 168987987), (3, 56329329), (7, 24141141), (9, 18776443), (21, 8047047), (63, 2682349), (1231, 137277), (2179, 77553), (3693, 45759), (6537, 25851), (8617, 19611), (11079, 15253)]