21692240

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1031}}^1$

素因数の和:1307

約数の個数: 40

約数和(自身を含む): 50675328

約数和(自身を除く): 28983088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 1031, 1052, 1315, 2062, 2104, 2630, 4124, 4208, 5155, 5260, 8248, 10310, 10520, 16496, 20620, 21040, 41240, 82480, 271153, 542306, 1084612, 1355765, 2169224, 2711530, 4338448, 5423060, 10846120, 21692240]

約数ペア:

[(1, 21692240), (2, 10846120), (4, 5423060), (5, 4338448), (8, 2711530), (10, 2169224), (16, 1355765), (20, 1084612), (40, 542306), (80, 271153), (263, 82480), (526, 41240), (1031, 21040), (1052, 20620), (1315, 16496), (2062, 10520), (2104, 10310), (2630, 8248), (4124, 5260), (4208, 5155)]