25655420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:627

約数の個数: 72

約数和(自身を含む): 64120896

約数和(自身を除く): 38465476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 470, 490, 557, 658, 940, 980, 1114, 1316, 1645, 2228, 2303, 2785, 3290, 3899, 4606, 5570, 6580, 7798, 9212, 11140, 11515, 15596, 19495, 23030, 26179, 27293, 38990, 46060, 52358, 54586, 77980, 104716, 109172, 130895, 136465, 183253, 261790, 272930, 366506, 523580, 545860, 733012, 916265, 1282771, 1832530, 2565542, 3665060, 5131084, 6413855, 12827710, 25655420]

約数ペア:

[(1, 25655420), (2, 12827710), (4, 6413855), (5, 5131084), (7, 3665060), (10, 2565542), (14, 1832530), (20, 1282771), (28, 916265), (35, 733012), (47, 545860), (49, 523580), (70, 366506), (94, 272930), (98, 261790), (140, 183253), (188, 136465), (196, 130895), (235, 109172), (245, 104716), (329, 77980), (470, 54586), (490, 52358), (557, 46060), (658, 38990), (940, 27293), (980, 26179), (1114, 23030), (1316, 19495), (1645, 15596), (2228, 11515), (2303, 11140), (2785, 9212), (3290, 7798), (3899, 6580), (4606, 5570)]