21313552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2383}}^1$

素因数の和:2447

約数の個数: 40

約数和(自身を含む): 45524864

約数和(自身を除く): 24211312

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2236, 2383, 4472, 4766, 8944, 9532, 19064, 30979, 38128, 61958, 102469, 123916, 204938, 247832, 409876, 495664, 819752, 1332097, 1639504, 2664194, 5328388, 10656776, 21313552]

約数ペア:

[(1, 21313552), (2, 10656776), (4, 5328388), (8, 2664194), (13, 1639504), (16, 1332097), (26, 819752), (43, 495664), (52, 409876), (86, 247832), (104, 204938), (172, 123916), (208, 102469), (344, 61958), (559, 38128), (688, 30979), (1118, 19064), (2236, 9532), (2383, 8944), (4472, 4766)]