28217241

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:363

約数の個数: 40

約数和(自身を含む): 45968384

約数和(自身を除く): 17751143

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 127, 211, 351, 381, 633, 1053, 1143, 1651, 1899, 2743, 3429, 4953, 5697, 8229, 10287, 14859, 17091, 24687, 26797, 44577, 74061, 80391, 133731, 222183, 241173, 348361, 723519, 1045083, 2170557, 3135249, 9405747, 28217241]

約数ペア:

[(1, 28217241), (3, 9405747), (9, 3135249), (13, 2170557), (27, 1045083), (39, 723519), (81, 348361), (117, 241173), (127, 222183), (211, 133731), (351, 80391), (381, 74061), (633, 44577), (1053, 26797), (1143, 24687), (1651, 17091), (1899, 14859), (2743, 10287), (3429, 8229), (4953, 5697)]