20425075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{257}}^1$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 29464632

約数和(自身を除く): 9039557

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 257, 275, 289, 425, 935, 1285, 1445, 2827, 3179, 4369, 4675, 6425, 7225, 14135, 15895, 21845, 48059, 70675, 74273, 79475, 109225, 240295, 371365, 817003, 1201475, 1856825, 4085015, 20425075]

約数ペア:

[(1, 20425075), (5, 4085015), (11, 1856825), (17, 1201475), (25, 817003), (55, 371365), (85, 240295), (187, 109225), (257, 79475), (275, 74273), (289, 70675), (425, 48059), (935, 21845), (1285, 15895), (1445, 14135), (2827, 7225), (3179, 6425), (4369, 4675)]