21782166

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1723}}^1$

素因数の和:1785

約数の個数: 48

約数和(自身を含む): 51885504

約数和(自身を除く): 30103338

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 49, 86, 98, 129, 147, 258, 294, 301, 602, 903, 1723, 1806, 2107, 3446, 4214, 5169, 6321, 10338, 12061, 12642, 24122, 36183, 72366, 74089, 84427, 148178, 168854, 222267, 253281, 444534, 506562, 518623, 1037246, 1555869, 3111738, 3630361, 7260722, 10891083, 21782166]

約数ペア:

[(1, 21782166), (2, 10891083), (3, 7260722), (6, 3630361), (7, 3111738), (14, 1555869), (21, 1037246), (42, 518623), (43, 506562), (49, 444534), (86, 253281), (98, 222267), (129, 168854), (147, 148178), (258, 84427), (294, 74089), (301, 72366), (602, 36183), (903, 24122), (1723, 12642), (1806, 12061), (2107, 10338), (3446, 6321), (4214, 5169)]