28911650

素因数分解:

$2^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{89}}^2$

素因数の和:263

約数の個数: 36

約数和(自身を含む): 55131702

約数和(自身を除く): 26220052

約数列:

[1, 2, 5, 10, 25, 50, 73, 89, 146, 178, 365, 445, 730, 890, 1825, 2225, 3650, 4450, 6497, 7921, 12994, 15842, 32485, 39605, 64970, 79210, 162425, 198025, 324850, 396050, 578233, 1156466, 2891165, 5782330, 14455825, 28911650]

約数ペア:

[(1, 28911650), (2, 14455825), (5, 5782330), (10, 2891165), (25, 1156466), (50, 578233), (73, 396050), (89, 324850), (146, 198025), (178, 162425), (365, 79210), (445, 64970), (730, 39605), (890, 32485), (1825, 15842), (2225, 12994), (3650, 7921), (4450, 6497)]