21768376

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 50400000

約数和(自身を除く): 28631624

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 41, 56, 76, 82, 133, 152, 164, 266, 287, 328, 499, 532, 574, 779, 998, 1064, 1148, 1558, 1996, 2296, 3116, 3493, 3992, 5453, 6232, 6986, 9481, 10906, 13972, 18962, 20459, 21812, 27944, 37924, 40918, 43624, 66367, 75848, 81836, 132734, 143213, 163672, 265468, 286426, 388721, 530936, 572852, 777442, 1145704, 1554884, 2721047, 3109768, 5442094, 10884188, 21768376]

約数ペア:

[(1, 21768376), (2, 10884188), (4, 5442094), (7, 3109768), (8, 2721047), (14, 1554884), (19, 1145704), (28, 777442), (38, 572852), (41, 530936), (56, 388721), (76, 286426), (82, 265468), (133, 163672), (152, 143213), (164, 132734), (266, 81836), (287, 75848), (328, 66367), (499, 43624), (532, 40918), (574, 37924), (779, 27944), (998, 21812), (1064, 20459), (1148, 18962), (1558, 13972), (1996, 10906), (2296, 9481), (3116, 6986), (3493, 6232), (3992, 5453)]