20988310

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 24299114

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 71, 82, 103, 142, 205, 206, 287, 355, 410, 497, 515, 574, 710, 721, 994, 1030, 1435, 1442, 2485, 2870, 2911, 3605, 4223, 4970, 5822, 7210, 7313, 8446, 14555, 14626, 20377, 21115, 29110, 29561, 36565, 40754, 42230, 51191, 59122, 73130, 101885, 102382, 147805, 203770, 255955, 295610, 299833, 511910, 599666, 1499165, 2098831, 2998330, 4197662, 10494155, 20988310]

約数ペア:

[(1, 20988310), (2, 10494155), (5, 4197662), (7, 2998330), (10, 2098831), (14, 1499165), (35, 599666), (41, 511910), (70, 299833), (71, 295610), (82, 255955), (103, 203770), (142, 147805), (205, 102382), (206, 101885), (287, 73130), (355, 59122), (410, 51191), (497, 42230), (515, 40754), (574, 36565), (710, 29561), (721, 29110), (994, 21115), (1030, 20377), (1435, 14626), (1442, 14555), (2485, 8446), (2870, 7313), (2911, 7210), (3605, 5822), (4223, 4970)]