20807228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{3671}}^1$

素因数の和:3797

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 18776932

約数列:

[1, 2, 4, 13, 26, 52, 109, 218, 436, 1417, 2834, 3671, 5668, 7342, 14684, 47723, 95446, 190892, 400139, 800278, 1600556, 5201807, 10403614, 20807228]

約数ペア:

[(1, 20807228), (2, 10403614), (4, 5201807), (13, 1600556), (26, 800278), (52, 400139), (109, 190892), (218, 95446), (436, 47723), (1417, 14684), (2834, 7342), (3671, 5668)]