90997160

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{25561}}^1$

素因数の和:25661

約数の個数: 32

約数和(自身を含む): 207052200

約数和(自身を除く): 116055040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 25561, 51122, 102244, 127805, 204488, 255610, 511220, 1022440, 2274929, 4549858, 9099716, 11374645, 18199432, 22749290, 45498580, 90997160]

約数ペア:

[(1, 90997160), (2, 45498580), (4, 22749290), (5, 18199432), (8, 11374645), (10, 9099716), (20, 4549858), (40, 2274929), (89, 1022440), (178, 511220), (356, 255610), (445, 204488), (712, 127805), (890, 102244), (1780, 51122), (3560, 25561)]