28628691

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 48722688

約数和(自身を除く): 20093997

約数列:

[1, 3, 7, 13, 21, 39, 49, 71, 91, 147, 211, 213, 273, 497, 633, 637, 923, 1477, 1491, 1911, 2743, 2769, 3479, 4431, 6461, 8229, 10339, 10437, 14981, 19201, 19383, 31017, 44943, 45227, 57603, 104867, 134407, 135681, 194753, 314601, 403221, 584259, 734069, 1363271, 2202207, 4089813, 9542897, 28628691]

約数ペア:

[(1, 28628691), (3, 9542897), (7, 4089813), (13, 2202207), (21, 1363271), (39, 734069), (49, 584259), (71, 403221), (91, 314601), (147, 194753), (211, 135681), (213, 134407), (273, 104867), (497, 57603), (633, 45227), (637, 44943), (923, 31017), (1477, 19383), (1491, 19201), (1911, 14981), (2743, 10437), (2769, 10339), (3479, 8229), (4431, 6461)]