21973215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 41564160

約数和(自身を除く): 19590945

約数列:

[1, 3, 5, 11, 15, 19, 33, 43, 55, 57, 95, 129, 163, 165, 209, 215, 285, 473, 489, 627, 645, 815, 817, 1045, 1419, 1793, 2365, 2445, 2451, 3097, 3135, 4085, 5379, 7009, 7095, 8965, 8987, 9291, 12255, 15485, 21027, 26895, 26961, 34067, 35045, 44935, 46455, 77099, 102201, 105135, 133171, 134805, 170335, 231297, 385495, 399513, 511005, 665855, 1156485, 1464881, 1997565, 4394643, 7324405, 21973215]

約数ペア:

[(1, 21973215), (3, 7324405), (5, 4394643), (11, 1997565), (15, 1464881), (19, 1156485), (33, 665855), (43, 511005), (55, 399513), (57, 385495), (95, 231297), (129, 170335), (163, 134805), (165, 133171), (209, 105135), (215, 102201), (285, 77099), (473, 46455), (489, 44935), (627, 35045), (645, 34067), (815, 26961), (817, 26895), (1045, 21027), (1419, 15485), (1793, 12255), (2365, 9291), (2445, 8987), (2451, 8965), (3097, 7095), (3135, 7009), (4085, 5379)]