21121004

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{1181}}^1$

素因数の和:1465

約数の個数: 24

約数和(自身を含む): 39318048

約数和(自身を除く): 18197044

約数列:

[1, 2, 4, 17, 34, 68, 263, 526, 1052, 1181, 2362, 4471, 4724, 8942, 17884, 20077, 40154, 80308, 310603, 621206, 1242412, 5280251, 10560502, 21121004]

約数ペア:

[(1, 21121004), (2, 10560502), (4, 5280251), (17, 1242412), (34, 621206), (68, 310603), (263, 80308), (526, 40154), (1052, 20077), (1181, 17884), (2362, 8942), (4471, 4724)]