31909120

素因数分解:

$2^8\times 5^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:375

約数の個数: 72

約数和(自身を含む): 77520744

約数和(自身を除く): 45611624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 256, 257, 320, 388, 485, 514, 640, 776, 970, 1028, 1280, 1285, 1552, 1940, 2056, 2570, 3104, 3880, 4112, 5140, 6208, 7760, 8224, 10280, 12416, 15520, 16448, 20560, 24832, 24929, 31040, 32896, 41120, 49858, 62080, 65792, 82240, 99716, 124160, 124645, 164480, 199432, 249290, 328960, 398864, 498580, 797728, 997160, 1595456, 1994320, 3190912, 3988640, 6381824, 7977280, 15954560, 31909120]

約数ペア:

[(1, 31909120), (2, 15954560), (4, 7977280), (5, 6381824), (8, 3988640), (10, 3190912), (16, 1994320), (20, 1595456), (32, 997160), (40, 797728), (64, 498580), (80, 398864), (97, 328960), (128, 249290), (160, 199432), (194, 164480), (256, 124645), (257, 124160), (320, 99716), (388, 82240), (485, 65792), (514, 62080), (640, 49858), (776, 41120), (970, 32896), (1028, 31040), (1280, 24929), (1285, 24832), (1552, 20560), (1940, 16448), (2056, 15520), (2570, 12416), (3104, 10280), (3880, 8224), (4112, 7760), (5140, 6208)]