81053980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{578957}}^1$

素因数の和:578973

約数の個数: 24

約数和(自身を含む): 194529888

約数和(自身を除く): 113475908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 578957, 1157914, 2315828, 2894785, 4052699, 5789570, 8105398, 11579140, 16210796, 20263495, 40526990, 81053980]

約数ペア:

[(1, 81053980), (2, 40526990), (4, 20263495), (5, 16210796), (7, 11579140), (10, 8105398), (14, 5789570), (20, 4052699), (28, 2894785), (35, 2315828), (70, 1157914), (140, 578957)]