128705920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{28729}}^1$

素因数の和:28755

約数の個数: 64

約数和(自身を含む): 351655200

約数和(自身を除く): 222949280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 28729, 57458, 114916, 143645, 201103, 229832, 287290, 402206, 459664, 574580, 804412, 919328, 1005515, 1149160, 1608824, 1838656, 2011030, 2298320, 3217648, 3677312, 4022060, 4596640, 6435296, 8044120, 9193280, 12870592, 16088240, 18386560, 25741184, 32176480, 64352960, 128705920]

約数ペア:

[(1, 128705920), (2, 64352960), (4, 32176480), (5, 25741184), (7, 18386560), (8, 16088240), (10, 12870592), (14, 9193280), (16, 8044120), (20, 6435296), (28, 4596640), (32, 4022060), (35, 3677312), (40, 3217648), (56, 2298320), (64, 2011030), (70, 1838656), (80, 1608824), (112, 1149160), (128, 1005515), (140, 919328), (160, 804412), (224, 574580), (280, 459664), (320, 402206), (448, 287290), (560, 229832), (640, 201103), (896, 143645), (1120, 114916), (2240, 57458), (4480, 28729)]