20515460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{146539}}^1$

素因数の和:146555

約数の個数: 24

約数和(自身を含む): 49237440

約数和(自身を除く): 28721980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 146539, 293078, 586156, 732695, 1025773, 1465390, 2051546, 2930780, 4103092, 5128865, 10257730, 20515460]

約数ペア:

[(1, 20515460), (2, 10257730), (4, 5128865), (5, 4103092), (7, 2930780), (10, 2051546), (14, 1465390), (20, 1025773), (28, 732695), (35, 586156), (70, 293078), (140, 146539)]