17993955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{419}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 15068445

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 409, 419, 1227, 1257, 2045, 2095, 2863, 2933, 6135, 6285, 8589, 8799, 14315, 14665, 42945, 43995, 171371, 514113, 856855, 1199597, 2570565, 3598791, 5997985, 17993955]

約数ペア:

[(1, 17993955), (3, 5997985), (5, 3598791), (7, 2570565), (15, 1199597), (21, 856855), (35, 514113), (105, 171371), (409, 43995), (419, 42945), (1227, 14665), (1257, 14315), (2045, 8799), (2095, 8589), (2863, 6285), (2933, 6135)]