20515712

素因数分解:

$2^7\times 7^2\times {\mathrm{3271}}^1$

素因数の和:3299

約数の個数: 48

約数和(自身を含む): 47558520

約数和(自身を除く): 27042808

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 392, 448, 784, 896, 1568, 3136, 3271, 6272, 6542, 13084, 22897, 26168, 45794, 52336, 91588, 104672, 160279, 183176, 209344, 320558, 366352, 418688, 641116, 732704, 1282232, 1465408, 2564464, 2930816, 5128928, 10257856, 20515712]

約数ペア:

[(1, 20515712), (2, 10257856), (4, 5128928), (7, 2930816), (8, 2564464), (14, 1465408), (16, 1282232), (28, 732704), (32, 641116), (49, 418688), (56, 366352), (64, 320558), (98, 209344), (112, 183176), (128, 160279), (196, 104672), (224, 91588), (392, 52336), (448, 45794), (784, 26168), (896, 22897), (1568, 13084), (3136, 6542), (3271, 6272)]