19881925

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 30748032

約数和(自身を除く): 10866107

約数列:

[1, 5, 7, 17, 25, 35, 41, 85, 119, 163, 175, 205, 287, 425, 595, 697, 815, 1025, 1141, 1435, 2771, 2975, 3485, 4075, 4879, 5705, 6683, 7175, 13855, 17425, 19397, 24395, 28525, 33415, 46781, 69275, 96985, 113611, 121975, 167075, 233905, 484925, 568055, 795277, 1169525, 2840275, 3976385, 19881925]

約数ペア:

[(1, 19881925), (5, 3976385), (7, 2840275), (17, 1169525), (25, 795277), (35, 568055), (41, 484925), (85, 233905), (119, 167075), (163, 121975), (175, 113611), (205, 96985), (287, 69275), (425, 46781), (595, 33415), (697, 28525), (815, 24395), (1025, 19397), (1141, 17425), (1435, 13855), (2771, 7175), (2975, 6683), (3485, 5705), (4075, 4879)]