18764613

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1999}}^1$

素因数の和:2161

約数の個数: 24

約数和(自身を含む): 31200000

約数和(自身を除く): 12435387

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 1999, 3129, 5997, 9387, 13993, 17991, 41979, 125937, 297851, 893553, 2084957, 2680659, 6254871, 18764613]

約数ペア:

[(1, 18764613), (3, 6254871), (7, 2680659), (9, 2084957), (21, 893553), (63, 297851), (149, 125937), (447, 41979), (1043, 17991), (1341, 13993), (1999, 9387), (3129, 5997)]