20546505

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3433}}^1$

素因数の和:3470

約数の個数: 48

約数和(自身を含む): 42856320

約数和(自身を除く): 22309815

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3433, 5985, 10299, 17165, 24031, 30897, 51495, 65227, 72093, 120155, 154485, 195681, 216279, 326135, 360465, 456589, 587043, 978405, 1081395, 1369767, 2282945, 2935215, 4109301, 6848835, 20546505]

約数ペア:

[(1, 20546505), (3, 6848835), (5, 4109301), (7, 2935215), (9, 2282945), (15, 1369767), (19, 1081395), (21, 978405), (35, 587043), (45, 456589), (57, 360465), (63, 326135), (95, 216279), (105, 195681), (133, 154485), (171, 120155), (285, 72093), (315, 65227), (399, 51495), (665, 30897), (855, 24031), (1197, 17165), (1995, 10299), (3433, 5985)]