21686382

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^2\times {\mathrm{239}}^1$

素因数の和:389

約数の個数: 36

約数和(自身を含む): 47857680

約数和(自身を除く): 26171298

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 239, 426, 478, 639, 717, 1278, 1434, 2151, 4302, 5041, 10082, 15123, 16969, 30246, 33938, 45369, 50907, 90738, 101814, 152721, 305442, 1204799, 2409598, 3614397, 7228794, 10843191, 21686382]

約数ペア:

[(1, 21686382), (2, 10843191), (3, 7228794), (6, 3614397), (9, 2409598), (18, 1204799), (71, 305442), (142, 152721), (213, 101814), (239, 90738), (426, 50907), (478, 45369), (639, 33938), (717, 30246), (1278, 16969), (1434, 15123), (2151, 10082), (4302, 5041)]