20841890

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19121}}^1$

素因数の和:19237

約数の個数: 16

約数和(自身を含む): 37861560

約数和(自身を除く): 17019670

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19121, 38242, 95605, 191210, 2084189, 4168378, 10420945, 20841890]

約数ペア:

[(1, 20841890), (2, 10420945), (5, 4168378), (10, 2084189), (109, 191210), (218, 95605), (545, 38242), (1090, 19121)]