21503378

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{2609}}^1$

素因数の和:2941

約数の個数: 16

約数和(自身を含む): 34859160

約数和(自身を除く): 13355782

約数列:

[1, 2, 13, 26, 317, 634, 2609, 4121, 5218, 8242, 33917, 67834, 827053, 1654106, 10751689, 21503378]

約数ペア:

[(1, 21503378), (2, 10751689), (13, 1654106), (26, 827053), (317, 67834), (634, 33917), (2609, 8242), (4121, 5218)]