638637813

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{16087}}^1$

素因数の和:16505

約数の個数: 24

約数和(自身を含む): 1008910656

約数和(自身を除く): 370272843

約数列:

[1, 3, 9, 11, 33, 99, 401, 1203, 3609, 4411, 13233, 16087, 39699, 48261, 144783, 176957, 530871, 1592613, 6450887, 19352661, 58057983, 70959757, 212879271, 638637813]

約数ペア:

[(1, 638637813), (3, 212879271), (9, 70959757), (11, 58057983), (33, 19352661), (99, 6450887), (401, 1592613), (1203, 530871), (3609, 176957), (4411, 144783), (13233, 48261), (16087, 39699)]