21000771

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{401}}^1$

素因数の和:464

約数の個数: 36

約数和(自身を含む): 34679736

約数和(自身を除く): 13678965

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 207, 253, 401, 529, 759, 1203, 1587, 2277, 3609, 4411, 4761, 5819, 9223, 13233, 17457, 27669, 39699, 52371, 83007, 101453, 212129, 304359, 636387, 913077, 1909161, 2333419, 7000257, 21000771]

約数ペア:

[(1, 21000771), (3, 7000257), (9, 2333419), (11, 1909161), (23, 913077), (33, 636387), (69, 304359), (99, 212129), (207, 101453), (253, 83007), (401, 52371), (529, 39699), (759, 27669), (1203, 17457), (1587, 13233), (2277, 9223), (3609, 5819), (4411, 4761)]