20841940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3631}}^1$

素因数の和:3688

約数の個数: 48

約数和(自身を含む): 51254784

約数和(自身を除く): 30412844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3631, 5740, 7262, 14524, 18155, 25417, 36310, 50834, 72620, 101668, 127085, 148871, 254170, 297742, 508340, 595484, 744355, 1042097, 1488710, 2084194, 2977420, 4168388, 5210485, 10420970, 20841940]

約数ペア:

[(1, 20841940), (2, 10420970), (4, 5210485), (5, 4168388), (7, 2977420), (10, 2084194), (14, 1488710), (20, 1042097), (28, 744355), (35, 595484), (41, 508340), (70, 297742), (82, 254170), (140, 148871), (164, 127085), (205, 101668), (287, 72620), (410, 50834), (574, 36310), (820, 25417), (1148, 18155), (1435, 14524), (2870, 7262), (3631, 5740)]