19778013

素因数分解:

$3^5\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 29848000

約数和(自身を除く): 10069987

約数列:

[1, 3, 9, 27, 81, 199, 243, 409, 597, 1227, 1791, 3681, 5373, 11043, 16119, 33129, 48357, 81391, 99387, 244173, 732519, 2197557, 6592671, 19778013]

約数ペア:

[(1, 19778013), (3, 6592671), (9, 2197557), (27, 732519), (81, 244173), (199, 99387), (243, 81391), (409, 48357), (597, 33129), (1227, 16119), (1791, 11043), (3681, 5373)]