20748145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 28790784

約数和(自身を除く): 8042639

約数列:

[1, 5, 11, 31, 43, 55, 155, 215, 283, 341, 473, 1333, 1415, 1705, 2365, 3113, 6665, 8773, 12169, 14663, 15565, 43865, 60845, 73315, 96503, 133859, 377239, 482515, 669295, 1886195, 4149629, 20748145]

約数ペア:

[(1, 20748145), (5, 4149629), (11, 1886195), (31, 669295), (43, 482515), (55, 377239), (155, 133859), (215, 96503), (283, 73315), (341, 60845), (473, 43865), (1333, 15565), (1415, 14663), (1705, 12169), (2365, 8773), (3113, 6665)]