20659455

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1759}}^1$

素因数の和:1805

約数の個数: 40

約数和(自身を含む): 38332800

約数和(自身を除く): 17673345

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1759, 2349, 3915, 5277, 8795, 11745, 15831, 26385, 47493, 51011, 79155, 142479, 153033, 237465, 255055, 459099, 712395, 765165, 1377297, 2295495, 4131891, 6886485, 20659455]

約数ペア:

[(1, 20659455), (3, 6886485), (5, 4131891), (9, 2295495), (15, 1377297), (27, 765165), (29, 712395), (45, 459099), (81, 255055), (87, 237465), (135, 153033), (145, 142479), (261, 79155), (405, 51011), (435, 47493), (783, 26385), (1305, 15831), (1759, 11745), (2349, 8795), (3915, 5277)]