81411280

素因数分解:

$2^4\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4483}}^1$

素因数の和:4723

約数の個数: 40

約数和(自身を含む): 190157472

約数和(自身を除く): 108746192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227, 454, 908, 1135, 1816, 2270, 3632, 4483, 4540, 8966, 9080, 17932, 18160, 22415, 35864, 44830, 71728, 89660, 179320, 358640, 1017641, 2035282, 4070564, 5088205, 8141128, 10176410, 16282256, 20352820, 40705640, 81411280]

約数ペア:

[(1, 81411280), (2, 40705640), (4, 20352820), (5, 16282256), (8, 10176410), (10, 8141128), (16, 5088205), (20, 4070564), (40, 2035282), (80, 1017641), (227, 358640), (454, 179320), (908, 89660), (1135, 71728), (1816, 44830), (2270, 35864), (3632, 22415), (4483, 18160), (4540, 17932), (8966, 9080)]