20561004

素因数分解:

$2^2\times 3^2\times {\mathrm{439}}^1\times {\mathrm{1301}}^1$

素因数の和:1750

約数の個数: 36

約数和(自身を含む): 52132080

約数和(自身を除く): 31571076

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 439, 878, 1301, 1317, 1756, 2602, 2634, 3903, 3951, 5204, 5268, 7806, 7902, 11709, 15612, 15804, 23418, 46836, 571139, 1142278, 1713417, 2284556, 3426834, 5140251, 6853668, 10280502, 20561004]

約数ペア:

[(1, 20561004), (2, 10280502), (3, 6853668), (4, 5140251), (6, 3426834), (9, 2284556), (12, 1713417), (18, 1142278), (36, 571139), (439, 46836), (878, 23418), (1301, 15804), (1317, 15612), (1756, 11709), (2602, 7902), (2634, 7806), (3903, 5268), (3951, 5204)]