1978375

素因数分解:

$5^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:65

約数の個数: 48

約数和(自身を含む): 3201120

約数和(自身を除く): 1222745

約数列:

[1, 5, 7, 17, 19, 25, 35, 49, 85, 95, 119, 125, 133, 175, 245, 323, 425, 475, 595, 665, 833, 875, 931, 1225, 1615, 2125, 2261, 2375, 2975, 3325, 4165, 4655, 6125, 8075, 11305, 14875, 15827, 16625, 20825, 23275, 40375, 56525, 79135, 104125, 116375, 282625, 395675, 1978375]

約数ペア:

[(1, 1978375), (5, 395675), (7, 282625), (17, 116375), (19, 104125), (25, 79135), (35, 56525), (49, 40375), (85, 23275), (95, 20825), (119, 16625), (125, 15827), (133, 14875), (175, 11305), (245, 8075), (323, 6125), (425, 4655), (475, 4165), (595, 3325), (665, 2975), (833, 2375), (875, 2261), (931, 2125), (1225, 1615)]