19664001

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 34444800

約数和(自身を除く): 14780799

約数列:

[1, 3, 7, 9, 21, 29, 47, 63, 87, 141, 203, 229, 261, 329, 423, 609, 687, 987, 1363, 1603, 1827, 2061, 2961, 4089, 4809, 6641, 9541, 10763, 12267, 14427, 19923, 28623, 32289, 46487, 59769, 75341, 85869, 96867, 139461, 226023, 312127, 418383, 678069, 936381, 2184889, 2809143, 6554667, 19664001]

約数ペア:

[(1, 19664001), (3, 6554667), (7, 2809143), (9, 2184889), (21, 936381), (29, 678069), (47, 418383), (63, 312127), (87, 226023), (141, 139461), (203, 96867), (229, 85869), (261, 75341), (329, 59769), (423, 46487), (609, 32289), (687, 28623), (987, 19923), (1363, 14427), (1603, 12267), (1827, 10763), (2061, 9541), (2961, 6641), (4089, 4809)]