278318890

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{66109}}^1$

素因数の和:66537

約数の個数: 16

約数和(自身を含む): 502171560

約数和(自身を除く): 223852670

約数列:

[1, 2, 5, 10, 421, 842, 2105, 4210, 66109, 132218, 330545, 661090, 27831889, 55663778, 139159445, 278318890]

約数ペア:

[(1, 278318890), (2, 139159445), (5, 55663778), (10, 27831889), (421, 661090), (842, 330545), (2105, 132218), (4210, 66109)]