20561372

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{179}}^1$

素因数の和:290

約数の個数: 36

約数和(自身を含む): 39813480

約数和(自身を除く): 19252108

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 179, 188, 358, 611, 716, 1222, 2209, 2327, 2444, 4418, 4654, 8413, 8836, 9308, 16826, 28717, 33652, 57434, 109369, 114868, 218738, 395411, 437476, 790822, 1581644, 5140343, 10280686, 20561372]

約数ペア:

[(1, 20561372), (2, 10280686), (4, 5140343), (13, 1581644), (26, 790822), (47, 437476), (52, 395411), (94, 218738), (179, 114868), (188, 109369), (358, 57434), (611, 33652), (716, 28717), (1222, 16826), (2209, 9308), (2327, 8836), (2444, 8413), (4418, 4654)]