285512420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{130969}}^1$

素因数の和:131087

約数の個数: 24

約数和(自身を含む): 605081400

約数和(自身を除く): 319568980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 130969, 261938, 523876, 654845, 1309690, 2619380, 14275621, 28551242, 57102484, 71378105, 142756210, 285512420]

約数ペア:

[(1, 285512420), (2, 142756210), (4, 71378105), (5, 57102484), (10, 28551242), (20, 14275621), (109, 2619380), (218, 1309690), (436, 654845), (545, 523876), (1090, 261938), (2180, 130969)]