20802712

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 46759680

約数和(自身を除く): 25956968

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 53, 56, 86, 106, 163, 172, 212, 301, 326, 344, 371, 424, 602, 652, 742, 1141, 1204, 1304, 1484, 2279, 2282, 2408, 2968, 4558, 4564, 7009, 8639, 9116, 9128, 14018, 15953, 17278, 18232, 28036, 31906, 34556, 49063, 56072, 60473, 63812, 69112, 98126, 120946, 127624, 196252, 241892, 371477, 392504, 483784, 742954, 1485908, 2600339, 2971816, 5200678, 10401356, 20802712]

約数ペア:

[(1, 20802712), (2, 10401356), (4, 5200678), (7, 2971816), (8, 2600339), (14, 1485908), (28, 742954), (43, 483784), (53, 392504), (56, 371477), (86, 241892), (106, 196252), (163, 127624), (172, 120946), (212, 98126), (301, 69112), (326, 63812), (344, 60473), (371, 56072), (424, 49063), (602, 34556), (652, 31906), (742, 28036), (1141, 18232), (1204, 17278), (1304, 15953), (1484, 14018), (2279, 9128), (2282, 9116), (2408, 8639), (2968, 7009), (4558, 4564)]