19507984

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{64171}}^1$

素因数の和:64198

約数の個数: 20

約数和(自身を含む): 39786640

約数和(自身を除く): 20278656

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 64171, 128342, 256684, 513368, 1026736, 1219249, 2438498, 4876996, 9753992, 19507984]

約数ペア:

[(1, 19507984), (2, 9753992), (4, 4876996), (8, 2438498), (16, 1219249), (19, 1026736), (38, 513368), (76, 256684), (152, 128342), (304, 64171)]