1561690625

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 2149737408

約数和(自身を除く): 588046783

約数列:

[1, 5, 11, 25, 55, 125, 181, 251, 275, 625, 905, 1255, 1375, 1991, 2761, 3125, 4525, 6275, 6875, 9955, 13805, 22625, 31375, 34375, 45431, 49775, 69025, 113125, 156875, 227155, 248875, 345125, 499741, 565625, 784375, 1135775, 1244375, 1725625, 2498705, 5678875, 6221875, 8628125, 12493525, 28394375, 62467625, 141971875, 312338125, 1561690625]

約数ペア:

[(1, 1561690625), (5, 312338125), (11, 141971875), (25, 62467625), (55, 28394375), (125, 12493525), (181, 8628125), (251, 6221875), (275, 5678875), (625, 2498705), (905, 1725625), (1255, 1244375), (1375, 1135775), (1991, 784375), (2761, 565625), (3125, 499741), (4525, 345125), (6275, 248875), (6875, 227155), (9955, 156875), (13805, 113125), (22625, 69025), (31375, 49775), (34375, 45431)]