20974815

素因数分解:

$3^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{619}}^1$

素因数の和:884

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 16522785

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 251, 619, 753, 1255, 1857, 2259, 3095, 3765, 5571, 6777, 9285, 11295, 16713, 27855, 33885, 83565, 155369, 466107, 776845, 1398321, 2330535, 4194963, 6991605, 20974815]

約数ペア:

[(1, 20974815), (3, 6991605), (5, 4194963), (9, 2330535), (15, 1398321), (27, 776845), (45, 466107), (135, 155369), (251, 83565), (619, 33885), (753, 27855), (1255, 16713), (1857, 11295), (2259, 9285), (3095, 6777), (3765, 5571)]