121521280

素因数分解:

$2^7\times 5^1\times {\mathrm{189877}}^1$

素因数の和:189896

約数の個数: 32

約数和(自身を含む): 290513340

約数和(自身を除く): 168992060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 189877, 379754, 759508, 949385, 1519016, 1898770, 3038032, 3797540, 6076064, 7595080, 12152128, 15190160, 24304256, 30380320, 60760640, 121521280]

約数ペア:

[(1, 121521280), (2, 60760640), (4, 30380320), (5, 24304256), (8, 15190160), (10, 12152128), (16, 7595080), (20, 6076064), (32, 3797540), (40, 3038032), (64, 1898770), (80, 1519016), (128, 949385), (160, 759508), (320, 379754), (640, 189877)]