18872973

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1637}}^1$

素因数の和:1714

約数の個数: 32

約数和(自身を含む): 32497920

約数和(自身を除く): 13624947

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1637, 1647, 3843, 4911, 11459, 11529, 14733, 34377, 44199, 99857, 103131, 299571, 309393, 698999, 898713, 2096997, 2696139, 6290991, 18872973]

約数ペア:

[(1, 18872973), (3, 6290991), (7, 2696139), (9, 2096997), (21, 898713), (27, 698999), (61, 309393), (63, 299571), (183, 103131), (189, 99857), (427, 44199), (549, 34377), (1281, 14733), (1637, 11529), (1647, 11459), (3843, 4911)]