20882735

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 27675648

約数和(自身を除く): 6792913

約数列:

[1, 5, 23, 41, 43, 103, 115, 205, 215, 515, 943, 989, 1763, 2369, 4223, 4429, 4715, 4945, 8815, 11845, 21115, 22145, 40549, 97129, 101867, 181589, 202745, 485645, 509335, 907945, 4176547, 20882735]

約数ペア:

[(1, 20882735), (5, 4176547), (23, 907945), (41, 509335), (43, 485645), (103, 202745), (115, 181589), (205, 101867), (215, 97129), (515, 40549), (943, 22145), (989, 21115), (1763, 11845), (2369, 8815), (4223, 4945), (4429, 4715)]