28506700

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{3203}}^1$

素因数の和:3306

約数の個数: 36

約数和(自身を含む): 62574120

約数和(自身を除く): 34067420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 3203, 4450, 6406, 8900, 12812, 16015, 32030, 64060, 80075, 160150, 285067, 320300, 570134, 1140268, 1425335, 2850670, 5701340, 7126675, 14253350, 28506700]

約数ペア:

[(1, 28506700), (2, 14253350), (4, 7126675), (5, 5701340), (10, 2850670), (20, 1425335), (25, 1140268), (50, 570134), (89, 320300), (100, 285067), (178, 160150), (356, 80075), (445, 64060), (890, 32030), (1780, 16015), (2225, 12812), (3203, 8900), (4450, 6406)]