81911584

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{677}}^1$

素因数の和:905

約数の個数: 48

約数和(自身を含む): 170856000

約数和(自身を除く): 88944416

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 199, 304, 398, 608, 677, 796, 1354, 1592, 2708, 3184, 3781, 5416, 6368, 7562, 10832, 12863, 15124, 21664, 25726, 30248, 51452, 60496, 102904, 120992, 134723, 205808, 269446, 411616, 538892, 1077784, 2155568, 2559737, 4311136, 5119474, 10238948, 20477896, 40955792, 81911584]

約数ペア:

[(1, 81911584), (2, 40955792), (4, 20477896), (8, 10238948), (16, 5119474), (19, 4311136), (32, 2559737), (38, 2155568), (76, 1077784), (152, 538892), (199, 411616), (304, 269446), (398, 205808), (608, 134723), (677, 120992), (796, 102904), (1354, 60496), (1592, 51452), (2708, 30248), (3184, 25726), (3781, 21664), (5416, 15124), (6368, 12863), (7562, 10832)]