2581551

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:205

約数の個数: 40

約数和(自身を含む): 4588320

約数和(自身を除く): 2006769

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 157, 189, 203, 261, 471, 567, 609, 783, 1099, 1413, 1827, 2349, 3297, 4239, 4553, 5481, 9891, 12717, 13659, 16443, 29673, 31871, 40977, 89019, 95613, 122931, 286839, 368793, 860517, 2581551]

約数ペア:

[(1, 2581551), (3, 860517), (7, 368793), (9, 286839), (21, 122931), (27, 95613), (29, 89019), (63, 40977), (81, 31871), (87, 29673), (157, 16443), (189, 13659), (203, 12717), (261, 9891), (471, 5481), (567, 4553), (609, 4239), (783, 3297), (1099, 2349), (1413, 1827)]