87721880

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{9661}}^1$

素因数の和:9899

約数の個数: 32

約数和(自身を含む): 198264240

約数和(自身を除く): 110542360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 4540, 9080, 9661, 19322, 38644, 48305, 77288, 96610, 193220, 386440, 2193047, 4386094, 8772188, 10965235, 17544376, 21930470, 43860940, 87721880]

約数ペア:

[(1, 87721880), (2, 43860940), (4, 21930470), (5, 17544376), (8, 10965235), (10, 8772188), (20, 4386094), (40, 2193047), (227, 386440), (454, 193220), (908, 96610), (1135, 77288), (1816, 48305), (2270, 38644), (4540, 19322), (9080, 9661)]