21037545

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4289}}^1$

素因数の和:4409

約数の個数: 24

約数和(自身を含む): 36808200

約数和(自身を除く): 15770655

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4289, 4905, 12867, 21445, 38601, 64335, 193005, 467501, 1402503, 2337505, 4207509, 7012515, 21037545]

約数ペア:

[(1, 21037545), (3, 7012515), (5, 4207509), (9, 2337505), (15, 1402503), (45, 467501), (109, 193005), (327, 64335), (545, 38601), (981, 21445), (1635, 12867), (4289, 4905)]