21890412

素因数分解:

$2^2\times 3^6\times {\mathrm{7507}}^1$

素因数の和:7529

約数の個数: 42

約数和(自身を含む): 57443708

約数和(自身を除く): 35553296

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 7507, 15014, 22521, 30028, 45042, 67563, 90084, 135126, 202689, 270252, 405378, 608067, 810756, 1216134, 1824201, 2432268, 3648402, 5472603, 7296804, 10945206, 21890412]

約数ペア:

[(1, 21890412), (2, 10945206), (3, 7296804), (4, 5472603), (6, 3648402), (9, 2432268), (12, 1824201), (18, 1216134), (27, 810756), (36, 608067), (54, 405378), (81, 270252), (108, 202689), (162, 135126), (243, 90084), (324, 67563), (486, 45042), (729, 30028), (972, 22521), (1458, 15014), (2916, 7507)]