21000916545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{200008729}}^1$

素因数の和:200008744

約数の個数: 16

約数和(自身を含む): 38401676160

約数和(自身を除く): 17400759615

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 200008729, 600026187, 1000043645, 1400061103, 3000130935, 4200183309, 7000305515, 21000916545]

約数ペア:

[(1, 21000916545), (3, 7000305515), (5, 4200183309), (7, 3000130935), (15, 1400061103), (21, 1000043645), (35, 600026187), (105, 200008729)]