19957960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{677}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 49792320

約数和(自身を除く): 29834360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 134, 220, 268, 335, 440, 536, 670, 677, 737, 1340, 1354, 1474, 2680, 2708, 2948, 3385, 3685, 5416, 5896, 6770, 7370, 7447, 13540, 14740, 14894, 27080, 29480, 29788, 37235, 45359, 59576, 74470, 90718, 148940, 181436, 226795, 297880, 362872, 453590, 498949, 907180, 997898, 1814360, 1995796, 2494745, 3991592, 4989490, 9978980, 19957960]

約数ペア:

[(1, 19957960), (2, 9978980), (4, 4989490), (5, 3991592), (8, 2494745), (10, 1995796), (11, 1814360), (20, 997898), (22, 907180), (40, 498949), (44, 453590), (55, 362872), (67, 297880), (88, 226795), (110, 181436), (134, 148940), (220, 90718), (268, 74470), (335, 59576), (440, 45359), (536, 37235), (670, 29788), (677, 29480), (737, 27080), (1340, 14894), (1354, 14740), (1474, 13540), (2680, 7447), (2708, 7370), (2948, 6770), (3385, 5896), (3685, 5416)]