20538105

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27943}}^1$

素因数の和:27965

約数の個数: 24

約数和(自身を含む): 38227392

約数和(自身を除く): 17689287

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27943, 83829, 139715, 195601, 419145, 586803, 978005, 1369207, 2934015, 4107621, 6846035, 20538105]

約数ペア:

[(1, 20538105), (3, 6846035), (5, 4107621), (7, 2934015), (15, 1369207), (21, 978005), (35, 586803), (49, 419145), (105, 195601), (147, 139715), (245, 83829), (735, 27943)]