21505184

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 23491936

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 61, 92, 122, 184, 244, 368, 479, 488, 736, 958, 976, 1403, 1916, 1952, 2806, 3832, 5612, 7664, 11017, 11224, 15328, 22034, 22448, 29219, 44068, 44896, 58438, 88136, 116876, 176272, 233752, 352544, 467504, 672037, 935008, 1344074, 2688148, 5376296, 10752592, 21505184]

約数ペア:

[(1, 21505184), (2, 10752592), (4, 5376296), (8, 2688148), (16, 1344074), (23, 935008), (32, 672037), (46, 467504), (61, 352544), (92, 233752), (122, 176272), (184, 116876), (244, 88136), (368, 58438), (479, 44896), (488, 44068), (736, 29219), (958, 22448), (976, 22034), (1403, 15328), (1916, 11224), (1952, 11017), (2806, 7664), (3832, 5612)]