20181661640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72077363}}^1$

素因数の和:72077381

約数の個数: 32

約数和(自身を含む): 51895702080

約数和(自身を除く): 31714040440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72077363, 144154726, 288309452, 360386815, 504541541, 576618904, 720773630, 1009083082, 1441547260, 2018166164, 2522707705, 2883094520, 4036332328, 5045415410, 10090830820, 20181661640]

約数ペア:

[(1, 20181661640), (2, 10090830820), (4, 5045415410), (5, 4036332328), (7, 2883094520), (8, 2522707705), (10, 2018166164), (14, 1441547260), (20, 1009083082), (28, 720773630), (35, 576618904), (40, 504541541), (56, 360386815), (70, 288309452), (140, 144154726), (280, 72077363)]