20102780

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3709}}^1$

素因数の和:3989

約数の個数: 24

約数和(自身を含む): 42383040

約数和(自身を除く): 22280260

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3709, 5420, 7418, 14836, 18545, 37090, 74180, 1005139, 2010278, 4020556, 5025695, 10051390, 20102780]

約数ペア:

[(1, 20102780), (2, 10051390), (4, 5025695), (5, 4020556), (10, 2010278), (20, 1005139), (271, 74180), (542, 37090), (1084, 18545), (1355, 14836), (2710, 7418), (3709, 5420)]