19781694

素因数分解:

$2^1\times 3^2\times {\mathrm{409}}^1\times {\mathrm{2687}}^1$

素因数の和:3104

約数の個数: 24

約数和(自身を含む): 42981120

約数和(自身を除く): 23199426

約数列:

[1, 2, 3, 6, 9, 18, 409, 818, 1227, 2454, 2687, 3681, 5374, 7362, 8061, 16122, 24183, 48366, 1098983, 2197966, 3296949, 6593898, 9890847, 19781694]

約数ペア:

[(1, 19781694), (2, 9890847), (3, 6593898), (6, 3296949), (9, 2197966), (18, 1098983), (409, 48366), (818, 24183), (1227, 16122), (2454, 8061), (2687, 7362), (3681, 5374)]