21759256

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 45554400

約数和(自身を除く): 23795144

約数列:

[1, 2, 4, 8, 19, 37, 38, 53, 73, 74, 76, 106, 146, 148, 152, 212, 292, 296, 424, 584, 703, 1007, 1387, 1406, 1961, 2014, 2701, 2774, 2812, 3869, 3922, 4028, 5402, 5548, 5624, 7738, 7844, 8056, 10804, 11096, 15476, 15688, 21608, 30952, 37259, 51319, 73511, 74518, 102638, 143153, 147022, 149036, 205276, 286306, 294044, 298072, 410552, 572612, 588088, 1145224, 2719907, 5439814, 10879628, 21759256]

約数ペア:

[(1, 21759256), (2, 10879628), (4, 5439814), (8, 2719907), (19, 1145224), (37, 588088), (38, 572612), (53, 410552), (73, 298072), (74, 294044), (76, 286306), (106, 205276), (146, 149036), (148, 147022), (152, 143153), (212, 102638), (292, 74518), (296, 73511), (424, 51319), (584, 37259), (703, 30952), (1007, 21608), (1387, 15688), (1406, 15476), (1961, 11096), (2014, 10804), (2701, 8056), (2774, 7844), (2812, 7738), (3869, 5624), (3922, 5548), (4028, 5402)]