20365904

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{547}}^1$

素因数の和:747

約数の個数: 40

約数和(自身を含む): 42809760

約数和(自身を除く): 22443856

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 179, 208, 358, 547, 716, 1094, 1432, 2188, 2327, 2864, 4376, 4654, 7111, 8752, 9308, 14222, 18616, 28444, 37232, 56888, 97913, 113776, 195826, 391652, 783304, 1272869, 1566608, 2545738, 5091476, 10182952, 20365904]

約数ペア:

[(1, 20365904), (2, 10182952), (4, 5091476), (8, 2545738), (13, 1566608), (16, 1272869), (26, 783304), (52, 391652), (104, 195826), (179, 113776), (208, 97913), (358, 56888), (547, 37232), (716, 28444), (1094, 18616), (1432, 14222), (2188, 9308), (2327, 8752), (2864, 7111), (4376, 4654)]