81631690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{13103}}^1$

素因数の和:13206

約数の個数: 32

約数和(自身を含む): 169827840

約数和(自身を除く): 88196150

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 6230, 13103, 26206, 65515, 91721, 131030, 183442, 458605, 917210, 1166167, 2332334, 5830835, 8163169, 11661670, 16326338, 40815845, 81631690]

約数ペア:

[(1, 81631690), (2, 40815845), (5, 16326338), (7, 11661670), (10, 8163169), (14, 5830835), (35, 2332334), (70, 1166167), (89, 917210), (178, 458605), (445, 183442), (623, 131030), (890, 91721), (1246, 65515), (3115, 26206), (6230, 13103)]