21129528

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{727}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 60802560

約数和(自身を除く): 39673032

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 173, 346, 519, 692, 727, 1038, 1211, 1384, 1454, 2076, 2181, 2422, 2908, 3633, 4152, 4362, 4844, 5089, 5816, 7266, 8724, 9688, 10178, 14532, 15267, 17448, 20356, 29064, 30534, 40712, 61068, 122136, 125771, 251542, 377313, 503084, 754626, 880397, 1006168, 1509252, 1760794, 2641191, 3018504, 3521588, 5282382, 7043176, 10564764, 21129528]

約数ペア:

[(1, 21129528), (2, 10564764), (3, 7043176), (4, 5282382), (6, 3521588), (7, 3018504), (8, 2641191), (12, 1760794), (14, 1509252), (21, 1006168), (24, 880397), (28, 754626), (42, 503084), (56, 377313), (84, 251542), (168, 125771), (173, 122136), (346, 61068), (519, 40712), (692, 30534), (727, 29064), (1038, 20356), (1211, 17448), (1384, 15267), (1454, 14532), (2076, 10178), (2181, 9688), (2422, 8724), (2908, 7266), (3633, 5816), (4152, 5089), (4362, 4844)]