19877643

素因数分解:

$3^7\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 30504000

約数和(自身を除く): 10626357

約数列:

[1, 3, 9, 27, 61, 81, 149, 183, 243, 447, 549, 729, 1341, 1647, 2187, 4023, 4941, 9089, 12069, 14823, 27267, 36207, 44469, 81801, 108621, 133407, 245403, 325863, 736209, 2208627, 6625881, 19877643]

約数ペア:

[(1, 19877643), (3, 6625881), (9, 2208627), (27, 736209), (61, 325863), (81, 245403), (149, 133407), (183, 108621), (243, 81801), (447, 44469), (549, 36207), (729, 27267), (1341, 14823), (1647, 12069), (2187, 9089), (4023, 4941)]