18870033

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{409}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 31225600

約数和(自身を除く): 12355567

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 409, 507, 1183, 1227, 2197, 2863, 3549, 5317, 6591, 8589, 15379, 15951, 37219, 46137, 69121, 111657, 207363, 483847, 898573, 1451541, 2695719, 6290011, 18870033]

約数ペア:

[(1, 18870033), (3, 6290011), (7, 2695719), (13, 1451541), (21, 898573), (39, 483847), (91, 207363), (169, 111657), (273, 69121), (409, 46137), (507, 37219), (1183, 15951), (1227, 15379), (2197, 8589), (2863, 6591), (3549, 5317)]