18871445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 25194240

約数和(自身を除く): 6322795

約数列:

[1, 5, 17, 53, 59, 71, 85, 265, 295, 355, 901, 1003, 1207, 3127, 3763, 4189, 4505, 5015, 6035, 15635, 18815, 20945, 53159, 63971, 71213, 222017, 265795, 319855, 356065, 1110085, 3774289, 18871445]

約数ペア:

[(1, 18871445), (5, 3774289), (17, 1110085), (53, 356065), (59, 319855), (71, 265795), (85, 222017), (265, 71213), (295, 63971), (355, 53159), (901, 20945), (1003, 18815), (1207, 15635), (3127, 6035), (3763, 5015), (4189, 4505)]