131135380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1097}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 284074560

約数和(自身を除く): 152939180

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 139, 172, 215, 278, 430, 556, 695, 860, 1097, 1390, 2194, 2780, 4388, 5485, 5977, 10970, 11954, 21940, 23908, 29885, 47171, 59770, 94342, 119540, 152483, 188684, 235855, 304966, 471710, 609932, 762415, 943420, 1524830, 3049660, 6556769, 13113538, 26227076, 32783845, 65567690, 131135380]

約数ペア:

[(1, 131135380), (2, 65567690), (4, 32783845), (5, 26227076), (10, 13113538), (20, 6556769), (43, 3049660), (86, 1524830), (139, 943420), (172, 762415), (215, 609932), (278, 471710), (430, 304966), (556, 235855), (695, 188684), (860, 152483), (1097, 119540), (1390, 94342), (2194, 59770), (2780, 47171), (4388, 29885), (5485, 23908), (5977, 21940), (10970, 11954)]