20347551

素因数分解:

$3^3\times 7^1\times {\mathrm{199}}^1\times {\mathrm{541}}^1$

素因数の和:756

約数の個数: 32

約数和(自身を含む): 34688000

約数和(自身を除く): 14340449

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 199, 541, 597, 1393, 1623, 1791, 3787, 4179, 4869, 5373, 11361, 12537, 14607, 34083, 37611, 102249, 107659, 322977, 753613, 968931, 2260839, 2906793, 6782517, 20347551]

約数ペア:

[(1, 20347551), (3, 6782517), (7, 2906793), (9, 2260839), (21, 968931), (27, 753613), (63, 322977), (189, 107659), (199, 102249), (541, 37611), (597, 34083), (1393, 14607), (1623, 12537), (1791, 11361), (3787, 5373), (4179, 4869)]