81017440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72337}}^1$

素因数の和:72359

約数の個数: 48

約数和(自身を含む): 218750112

約数和(自身を除く): 137732672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72337, 144674, 289348, 361685, 506359, 578696, 723370, 1012718, 1157392, 1446740, 2025436, 2314784, 2531795, 2893480, 4050872, 5063590, 5786960, 8101744, 10127180, 11573920, 16203488, 20254360, 40508720, 81017440]

約数ペア:

[(1, 81017440), (2, 40508720), (4, 20254360), (5, 16203488), (7, 11573920), (8, 10127180), (10, 8101744), (14, 5786960), (16, 5063590), (20, 4050872), (28, 2893480), (32, 2531795), (35, 2314784), (40, 2025436), (56, 1446740), (70, 1157392), (80, 1012718), (112, 723370), (140, 578696), (160, 506359), (224, 361685), (280, 289348), (560, 144674), (1120, 72337)]