218219995

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1\times {\mathrm{383}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 305528832

約数和(自身を除く): 87308837

約数列:

[1, 5, 7, 35, 73, 223, 365, 383, 511, 1115, 1561, 1915, 2555, 2681, 7805, 13405, 16279, 27959, 81395, 85409, 113953, 139795, 195713, 427045, 569765, 597863, 978565, 2989315, 6234857, 31174285, 43643999, 218219995]

約数ペア:

[(1, 218219995), (5, 43643999), (7, 31174285), (35, 6234857), (73, 2989315), (223, 978565), (365, 597863), (383, 569765), (511, 427045), (1115, 195713), (1561, 139795), (1915, 113953), (2555, 85409), (2681, 81395), (7805, 27959), (13405, 16279)]