19891375

素因数分解:

$5^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:328

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 8862545

約数列:

[1, 5, 7, 25, 35, 125, 127, 175, 179, 635, 875, 889, 895, 1253, 3175, 4445, 4475, 6265, 15875, 22225, 22375, 22733, 31325, 111125, 113665, 156625, 159131, 568325, 795655, 2841625, 3978275, 19891375]

約数ペア:

[(1, 19891375), (5, 3978275), (7, 2841625), (25, 795655), (35, 568325), (125, 159131), (127, 156625), (175, 113665), (179, 111125), (635, 31325), (875, 22733), (889, 22375), (895, 22225), (1253, 15875), (3175, 6265), (4445, 4475)]