21680988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{258107}}^1$

素因数の和:258121

約数の個数: 24

約数和(自身を含む): 57816192

約数和(自身を除く): 36135204

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 258107, 516214, 774321, 1032428, 1548642, 1806749, 3097284, 3613498, 5420247, 7226996, 10840494, 21680988]

約数ペア:

[(1, 21680988), (2, 10840494), (3, 7226996), (4, 5420247), (6, 3613498), (7, 3097284), (12, 1806749), (14, 1548642), (21, 1032428), (28, 774321), (42, 516214), (84, 258107)]