19851237

素因数分解:

$3^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 34259456

約数和(自身を除く): 14408219

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 157, 189, 223, 471, 567, 669, 1099, 1413, 1561, 2007, 3297, 4239, 4683, 6021, 9891, 12717, 14049, 18063, 29673, 35011, 42147, 89019, 105033, 126441, 245077, 315099, 735231, 945297, 2205693, 2835891, 6617079, 19851237]

約数ペア:

[(1, 19851237), (3, 6617079), (7, 2835891), (9, 2205693), (21, 945297), (27, 735231), (63, 315099), (81, 245077), (157, 126441), (189, 105033), (223, 89019), (471, 42147), (567, 35011), (669, 29673), (1099, 18063), (1413, 14049), (1561, 12717), (2007, 9891), (3297, 6021), (4239, 4683)]