21929875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 30663360

約数和(自身を除く): 8733485

約数列:

[1, 5, 11, 25, 41, 55, 125, 205, 275, 389, 451, 1025, 1375, 1945, 2255, 4279, 5125, 9725, 11275, 15949, 21395, 48625, 56375, 79745, 106975, 175439, 398725, 534875, 877195, 1993625, 4385975, 21929875]

約数ペア:

[(1, 21929875), (5, 4385975), (11, 1993625), (25, 877195), (41, 534875), (55, 398725), (125, 175439), (205, 106975), (275, 79745), (389, 56375), (451, 48625), (1025, 21395), (1375, 15949), (1945, 11275), (2255, 9725), (4279, 5125)]