19540816

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{64279}}^1$

素因数の和:64306

約数の個数: 20

約数和(自身を含む): 39853600

約数和(自身を除く): 20312784

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 64279, 128558, 257116, 514232, 1028464, 1221301, 2442602, 4885204, 9770408, 19540816]

約数ペア:

[(1, 19540816), (2, 9770408), (4, 4885204), (8, 2442602), (16, 1221301), (19, 1028464), (38, 514232), (76, 257116), (152, 128558), (304, 64279)]