20202820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{701}}^1$

素因数の和:852

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 26499836

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 131, 220, 262, 524, 655, 701, 1310, 1402, 1441, 2620, 2804, 2882, 3505, 5764, 7010, 7205, 7711, 14020, 14410, 15422, 28820, 30844, 38555, 77110, 91831, 154220, 183662, 367324, 459155, 918310, 1010141, 1836620, 2020282, 4040564, 5050705, 10101410, 20202820]

約数ペア:

[(1, 20202820), (2, 10101410), (4, 5050705), (5, 4040564), (10, 2020282), (11, 1836620), (20, 1010141), (22, 918310), (44, 459155), (55, 367324), (110, 183662), (131, 154220), (220, 91831), (262, 77110), (524, 38555), (655, 30844), (701, 28820), (1310, 15422), (1402, 14410), (1441, 14020), (2620, 7711), (2804, 7205), (2882, 7010), (3505, 5764)]