20673904

素因数分解:

$2^4\times {\mathrm{17}}^3\times {\mathrm{263}}^1$

素因数の和:322

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 22046576

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 263, 272, 289, 526, 578, 1052, 1156, 2104, 2312, 4208, 4471, 4624, 4913, 8942, 9826, 17884, 19652, 35768, 39304, 71536, 76007, 78608, 152014, 304028, 608056, 1216112, 1292119, 2584238, 5168476, 10336952, 20673904]

約数ペア:

[(1, 20673904), (2, 10336952), (4, 5168476), (8, 2584238), (16, 1292119), (17, 1216112), (34, 608056), (68, 304028), (136, 152014), (263, 78608), (272, 76007), (289, 71536), (526, 39304), (578, 35768), (1052, 19652), (1156, 17884), (2104, 9826), (2312, 8942), (4208, 4913), (4471, 4624)]