21340490

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:602

約数の個数: 32

約数和(自身を含む): 39833424

約数和(自身を除く): 18492934

約数列:

[1, 2, 5, 10, 37, 74, 137, 185, 274, 370, 421, 685, 842, 1370, 2105, 4210, 5069, 10138, 15577, 25345, 31154, 50690, 57677, 77885, 115354, 155770, 288385, 576770, 2134049, 4268098, 10670245, 21340490]

約数ペア:

[(1, 21340490), (2, 10670245), (5, 4268098), (10, 2134049), (37, 576770), (74, 288385), (137, 155770), (185, 115354), (274, 77885), (370, 57677), (421, 50690), (685, 31154), (842, 25345), (1370, 15577), (2105, 10138), (4210, 5069)]