245380280

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{27509}}^1$

素因数の和:27743

約数の個数: 32

約数和(自身を含む): 554601600

約数和(自身を除く): 309221320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 27509, 55018, 110036, 137545, 220072, 275090, 550180, 1100360, 6134507, 12269014, 24538028, 30672535, 49076056, 61345070, 122690140, 245380280]

約数ペア:

[(1, 245380280), (2, 122690140), (4, 61345070), (5, 49076056), (8, 30672535), (10, 24538028), (20, 12269014), (40, 6134507), (223, 1100360), (446, 550180), (892, 275090), (1115, 220072), (1784, 137545), (2230, 110036), (4460, 55018), (8920, 27509)]