21043965

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{337}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 35433216

約数和(自身を除く): 14389251

約数列:

[1, 3, 5, 15, 23, 69, 115, 181, 337, 345, 543, 905, 1011, 1685, 2715, 4163, 5055, 7751, 12489, 20815, 23253, 38755, 60997, 62445, 116265, 182991, 304985, 914955, 1402931, 4208793, 7014655, 21043965]

約数ペア:

[(1, 21043965), (3, 7014655), (5, 4208793), (15, 1402931), (23, 914955), (69, 304985), (115, 182991), (181, 116265), (337, 62445), (345, 60997), (543, 38755), (905, 23253), (1011, 20815), (1685, 12489), (2715, 7751), (4163, 5055)]