19555575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 35997696

約数和(自身を除く): 16442121

約数列:

[1, 3, 5, 13, 15, 25, 31, 39, 65, 75, 93, 155, 195, 325, 403, 465, 647, 775, 975, 1209, 1941, 2015, 2325, 3235, 6045, 8411, 9705, 10075, 16175, 20057, 25233, 30225, 42055, 48525, 60171, 100285, 126165, 210275, 260741, 300855, 501425, 630825, 782223, 1303705, 1504275, 3911115, 6518525, 19555575]

約数ペア:

[(1, 19555575), (3, 6518525), (5, 3911115), (13, 1504275), (15, 1303705), (25, 782223), (31, 630825), (39, 501425), (65, 300855), (75, 260741), (93, 210275), (155, 126165), (195, 100285), (325, 60171), (403, 48525), (465, 42055), (647, 30225), (775, 25233), (975, 20057), (1209, 16175), (1941, 10075), (2015, 9705), (2325, 8411), (3235, 6045)]