28907000

素因数分解:

$2^3\times 5^3\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 68459040

約数和(自身を除く): 39552040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 137, 200, 211, 250, 274, 422, 500, 548, 685, 844, 1000, 1055, 1096, 1370, 1688, 2110, 2740, 3425, 4220, 5275, 5480, 6850, 8440, 10550, 13700, 17125, 21100, 26375, 27400, 28907, 34250, 42200, 52750, 57814, 68500, 105500, 115628, 137000, 144535, 211000, 231256, 289070, 578140, 722675, 1156280, 1445350, 2890700, 3613375, 5781400, 7226750, 14453500, 28907000]

約数ペア:

[(1, 28907000), (2, 14453500), (4, 7226750), (5, 5781400), (8, 3613375), (10, 2890700), (20, 1445350), (25, 1156280), (40, 722675), (50, 578140), (100, 289070), (125, 231256), (137, 211000), (200, 144535), (211, 137000), (250, 115628), (274, 105500), (422, 68500), (500, 57814), (548, 52750), (685, 42200), (844, 34250), (1000, 28907), (1055, 27400), (1096, 26375), (1370, 21100), (1688, 17125), (2110, 13700), (2740, 10550), (3425, 8440), (4220, 6850), (5275, 5480)]