20689625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{367}}^1$

素因数の和:434

約数の個数: 32

約数和(自身を含む): 28933632

約数和(自身を除く): 8244007

約数列:

[1, 5, 11, 25, 41, 55, 125, 205, 275, 367, 451, 1025, 1375, 1835, 2255, 4037, 5125, 9175, 11275, 15047, 20185, 45875, 56375, 75235, 100925, 165517, 376175, 504625, 827585, 1880875, 4137925, 20689625]

約数ペア:

[(1, 20689625), (5, 4137925), (11, 1880875), (25, 827585), (41, 504625), (55, 376175), (125, 165517), (205, 100925), (275, 75235), (367, 56375), (451, 45875), (1025, 20185), (1375, 15047), (1835, 11275), (2255, 9175), (4037, 5125)]