25788640

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1811}}^1$

素因数の和:1915

約数の個数: 48

約数和(自身を含む): 61644240

約数和(自身を除く): 35855600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1424, 1780, 1811, 2848, 3560, 3622, 7120, 7244, 9055, 14240, 14488, 18110, 28976, 36220, 57952, 72440, 144880, 161179, 289760, 322358, 644716, 805895, 1289432, 1611790, 2578864, 3223580, 5157728, 6447160, 12894320, 25788640]

約数ペア:

[(1, 25788640), (2, 12894320), (4, 6447160), (5, 5157728), (8, 3223580), (10, 2578864), (16, 1611790), (20, 1289432), (32, 805895), (40, 644716), (80, 322358), (89, 289760), (160, 161179), (178, 144880), (356, 72440), (445, 57952), (712, 36220), (890, 28976), (1424, 18110), (1780, 14488), (1811, 14240), (2848, 9055), (3560, 7244), (3622, 7120)]