28220731

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21559}}^1$

素因数の和:21594

約数の個数: 16

約数和(自身を含む): 37255680

約数和(自身を除く): 9034949

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 21559, 150913, 237149, 366503, 1660043, 2565521, 4031533, 28220731]

約数ペア:

[(1, 28220731), (7, 4031533), (11, 2565521), (17, 1660043), (77, 366503), (119, 237149), (187, 150913), (1309, 21559)]