21192795

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2131}}^1$

素因数の和:2172

約数の個数: 48

約数和(自身を含む): 41906592

約数和(自身を除く): 20713797

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2131, 3315, 6393, 9945, 10655, 19179, 27703, 31965, 36227, 83109, 95895, 108681, 138515, 181135, 249327, 326043, 415545, 470951, 543405, 1246635, 1412853, 1630215, 2354755, 4238559, 7064265, 21192795]

約数ペア:

[(1, 21192795), (3, 7064265), (5, 4238559), (9, 2354755), (13, 1630215), (15, 1412853), (17, 1246635), (39, 543405), (45, 470951), (51, 415545), (65, 326043), (85, 249327), (117, 181135), (153, 138515), (195, 108681), (221, 95895), (255, 83109), (585, 36227), (663, 31965), (765, 27703), (1105, 19179), (1989, 10655), (2131, 9945), (3315, 6393)]