21520312702

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7802869}}^1$

素因数の和:7803075

約数の個数: 16

約数和(自身を含む): 37079238240

約数和(自身を除く): 15558925538

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7802869, 15605738, 54620083, 109240166, 1537165193, 3074330386, 10760156351, 21520312702]

約数ペア:

[(1, 21520312702), (2, 10760156351), (7, 3074330386), (14, 1537165193), (197, 109240166), (394, 54620083), (1379, 15605738), (2758, 7802869)]