21601335

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{503}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18073545

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 409, 503, 1227, 1509, 2045, 2515, 2863, 3521, 6135, 7545, 8589, 10563, 14315, 17605, 42945, 52815, 205727, 617181, 1028635, 1440089, 3085905, 4320267, 7200445, 21601335]

約数ペア:

[(1, 21601335), (3, 7200445), (5, 4320267), (7, 3085905), (15, 1440089), (21, 1028635), (35, 617181), (105, 205727), (409, 52815), (503, 42945), (1227, 17605), (1509, 14315), (2045, 10563), (2515, 8589), (2863, 7545), (3521, 6135)]