20198025

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1301}}^1$

素因数の和:1343

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 18549495

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1301, 1725, 3105, 3903, 5175, 6505, 11709, 15525, 19515, 29923, 32525, 35127, 58545, 89769, 97575, 149615, 175635, 269307, 292725, 448845, 748075, 807921, 878175, 1346535, 2244225, 4039605, 6732675, 20198025]

約数ペア:

[(1, 20198025), (3, 6732675), (5, 4039605), (9, 2244225), (15, 1346535), (23, 878175), (25, 807921), (27, 748075), (45, 448845), (69, 292725), (75, 269307), (115, 175635), (135, 149615), (207, 97575), (225, 89769), (345, 58545), (575, 35127), (621, 32525), (675, 29923), (1035, 19515), (1301, 15525), (1725, 11709), (3105, 6505), (3903, 5175)]