21319144

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 50855040

約数和(自身を除く): 29535896

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 53, 56, 77, 88, 106, 154, 212, 308, 371, 424, 583, 616, 653, 742, 1166, 1306, 1484, 2332, 2612, 2968, 4081, 4571, 4664, 5224, 7183, 8162, 9142, 14366, 16324, 18284, 28732, 32648, 34609, 36568, 50281, 57464, 69218, 100562, 138436, 201124, 242263, 276872, 380699, 402248, 484526, 761398, 969052, 1522796, 1938104, 2664893, 3045592, 5329786, 10659572, 21319144]

約数ペア:

[(1, 21319144), (2, 10659572), (4, 5329786), (7, 3045592), (8, 2664893), (11, 1938104), (14, 1522796), (22, 969052), (28, 761398), (44, 484526), (53, 402248), (56, 380699), (77, 276872), (88, 242263), (106, 201124), (154, 138436), (212, 100562), (308, 69218), (371, 57464), (424, 50281), (583, 36568), (616, 34609), (653, 32648), (742, 28732), (1166, 18284), (1306, 16324), (1484, 14366), (2332, 9142), (2612, 8162), (2968, 7183), (4081, 5224), (4571, 4664)]