19990243136

素因数分解:

$2^6\times {\mathrm{1979}}^1\times {\mathrm{157831}}^1$

素因数の和:159822

約数の個数: 28

約数和(自身を含む): 39688434720

約数和(自身を除く): 19698191584

約数列:

[1, 2, 4, 8, 16, 32, 64, 1979, 3958, 7916, 15832, 31664, 63328, 126656, 157831, 315662, 631324, 1262648, 2525296, 5050592, 10101184, 312347549, 624695098, 1249390196, 2498780392, 4997560784, 9995121568, 19990243136]

約数ペア:

[(1, 19990243136), (2, 9995121568), (4, 4997560784), (8, 2498780392), (16, 1249390196), (32, 624695098), (64, 312347549), (1979, 10101184), (3958, 5050592), (7916, 2525296), (15832, 1262648), (31664, 631324), (63328, 315662), (126656, 157831)]