171663640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{42491}}^1$

素因数の和:42603

約数の個数: 32

約数和(自身を含む): 390076560

約数和(自身を除く): 218412920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 42491, 84982, 169964, 212455, 339928, 424910, 849820, 1699640, 4291591, 8583182, 17166364, 21457955, 34332728, 42915910, 85831820, 171663640]

約数ペア:

[(1, 171663640), (2, 85831820), (4, 42915910), (5, 34332728), (8, 21457955), (10, 17166364), (20, 8583182), (40, 4291591), (101, 1699640), (202, 849820), (404, 424910), (505, 339928), (808, 212455), (1010, 169964), (2020, 84982), (4040, 42491)]