21084615

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4549}}^1$

素因数の和:4663

約数の個数: 24

約数和(自身を含む): 36909600

約数和(自身を除く): 15824985

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4549, 4635, 13647, 22745, 40941, 68235, 204705, 468547, 1405641, 2342735, 4216923, 7028205, 21084615]

約数ペア:

[(1, 21084615), (3, 7028205), (5, 4216923), (9, 2342735), (15, 1405641), (45, 468547), (103, 204705), (309, 68235), (515, 40941), (927, 22745), (1545, 13647), (4549, 4635)]